[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux-mtk/5.15.0-1030.34 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-mtk' to 'verification-done-jammy- linux-mtk'. If the problem still exists, change the tag 'verification- needed-jammy-linux-mtk' to 'verification-failed-jammy-linux-mtk'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux-mtk-v2 verification-needed-jammy-linux-mtk -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux- aws-5.15/5.15.0-1046.51~20.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux- aws-5.15' to 'verification-done-focal-linux-aws-5.15'. If the problem still exists, change the tag 'verification-needed-focal-linux-aws-5.15' to 'verification-failed-focal-linux-aws-5.15'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-aws-5.15-v2 verification-needed-focal-linux-aws-5.15 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
since intel-iotg kernel does not use Sapphire Rapids, so mark it as done. ** Tags removed: verification-needed-focal ** Tags added: verification-done-focal -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux-xilinx- zynqmp/5.15.0-1021.25 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy' to 'verification- done-jammy'. If the problem still exists, change the tag 'verification- needed-jammy' to 'verification-failed-jammy'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux-xilinx-zynqmp -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux-intel- iotg-5.15/5.15.0-1029.34~20.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-intel-iotg-5.15 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux- nvidia-5.19/5.19.0-1010.10 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux-nvidia-5.19 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux-azure/5.15.0-1038.45 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux-azure -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux-aws/5.15.0-1036.40 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux-aws -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux-azure/5.19.0-1026.29 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-kinetic' to 'verification-done-kinetic'. If the problem still exists, change the tag 'verification-needed-kinetic' to 'verification-failed-kinetic'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-kinetic-linux-azure -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux-aws/5.19.0-1025.26 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-kinetic' to 'verification-done-kinetic'. If the problem still exists, change the tag 'verification-needed-kinetic' to 'verification-failed-kinetic'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-kinetic-linux-aws -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux-ibm/5.19.0-1021.23 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-kinetic' to 'verification-done-kinetic'. If the problem still exists, change the tag 'verification-needed-kinetic' to 'verification-failed-kinetic'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-kinetic-linux-ibm -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux- hwe-5.15/5.15.0-71.78~20.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-focal-linux-hwe-5.15 verification-needed-focal -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug was fixed in the package linux - 5.19.0-40.41 --- linux (5.19.0-40.41) kinetic; urgency=medium * kinetic/linux: 5.19.0-40.41 -proposed tracker (LP: #2012668) * CVE-2023-0468 - io_uring: fix tw losing poll events - io_uring: make poll refs more robust * Regression in ext4 during online resize (LP: #2003816) - ext4: fix bad checksum after online resize - ext4: fix corruption when online resizing a 1K bigalloc fs - ext4: fix corrupt backup group descriptors after online resize linux (5.19.0-39.40) kinetic; urgency=medium * kinetic/linux: 5.19.0-39.40 -proposed tracker (LP: #2011876) * CVE-2023-26545 - net: mpls: fix stale pointer if allocation fails during device rename * CVE-2023-1032 - net: avoid double iput when sock_alloc_file fails * CVE-2022-41218 // CVE-2022-41218 is assigned to those bugs above. - media: dvb-core: Fix UAF due to refcount races at releasing * CVE-2023-1281 - net/sched: tcindex: update imperfect hash filters respecting rcu * linux: CONFIG_SERIAL_8250_MID=y (LP: #2009283) - [Config] enable CONFIG_SERIAL_8250_MID=y * apply the latest TDX attestation driver from Intel (LP: #2009437) - Revert "UBUNTU: SAUCE: selftests: tdx: Test GetReport TDX attestation feature" - Revert "UBUNTU: SAUCE: x86/tdx: Add TDX Guest attestation interface driver" - x86/tdx: Add a wrapper to get TDREPORT0 from the TDX Module - virt: Add TDX guest driver - selftests/tdx: Test TDX attestation GetReport support - [Config] enable TDX attestation driver as module by default * cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids (LP: #2008519) - cpufreq: intel_pstate: Adjust balance_performance EPP for Sapphire Rapids * Fail to output sound to external monitor which connects via docking station (LP: #2009024) - [Config] Enable CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM * Fix mediatek wifi driver crash when loading wrong SAR table (LP: #2009118) - wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read * CVE-2022-47929 - net: sched: disallow noqueue for qdisc classes * Intel graphic driver is not probing[8086:468b] (LP: #1990242) - drm/i915: Add new ADL-S pci id * Some QHD panels fail to refresh when PSR2 enabled (LP: #2009014) - drm/i915/psr: Use full update In case of area calculation fails - drm/i915: Ensure damage clip area is within pipe area - SAUCE: drm/i915/psr: Use calculated io and fast wake lines * overlayfs mounts as R/O over idmapped mount (LP: #2009065) - SAUCE: overlayfs: handle idmapped mounts in ovl_do_(set|remove)xattr * Kinetic update: upstream stable patchset 2023-02-28 (LP: #2008832) - usb: musb: remove extra check in musb_gadget_vbus_draw - arm64: dts: qcom: ipq6018-cp01-c1: use BLSPI1 pins - arm64: dts: qcom: sm8250-sony-xperia-edo: fix touchscreen bias-disable - arm64: dts: qcom: msm8996: Add MSM8996 Pro support - arm64: dts: qcom: msm8996: fix supported-hw in cpufreq OPP tables - arm64: dts: qcom: msm8996: fix GPU OPP table - ARM: dts: qcom: apq8064: fix coresight compatible - arm64: dts: qcom: sdm630: fix UART1 pin bias - arm64: dts: qcom: sdm845-cheza: fix AP suspend pin bias - arm64: dts: qcom: msm8916: Drop MSS fallback compatible - objtool, kcsan: Add volatile read/write instrumentation to whitelist - ARM: dts: stm32: Drop stm32mp15xc.dtsi from Avenger96 - ARM: dts: stm32: Fix AV96 WLAN regulator gpio property - drivers: soc: ti: knav_qmss_queue: Mark knav_acc_firmwares as static - arm64: dts: qcom: pm660: Use unique ADC5_VCOIN address in node name - arm64: dts: qcom: sm8250: correct LPASS pin pull down - soc: qcom: llcc: make irq truly optional - arm64: dts: qcom: sm8150: fix UFS PHY registers - arm64: dts: qcom: sm8250: fix UFS PHY registers - arm64: dts: qcom: sm8350: fix UFS PHY registers - arm64: dts: qcom: sm8250: drop bogus DP PHY clock - soc: qcom: apr: Add check for idr_alloc and of_property_read_string_index - arm64: dts: qcom: sm6125: fix SDHCI CQE reg names - arm: dts: spear600: Fix clcd interrupt - soc: ti: knav_qmss_queue: Fix PM disable depth imbalance in knav_queue_probe - soc: ti: smartreflex: Fix PM disable depth imbalance in omap_sr_probe - arm64: mm: kfence: only handle translation faults - perf: arm_dsu: Fix hotplug callback leak in dsu_pmu_init() - perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init() - perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu_init() - arm64: dts: ti: k3-am65-main: Drop dma-coherent in crypto node - arm64: dts: ti: k3-j721e-main: Drop dma-coherent in crypto node - ARM: dts: nuvoton: Remove bogus unit addresses from fixed-partition nodes - arm64: dts: mt6779: Fix devicetree build warnings - arm64: dts: mt2712e: Fix unit_address_vs_reg warning for oscillators - arm64: dts:
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug was fixed in the package linux - 5.15.0-70.77 --- linux (5.15.0-70.77) jammy; urgency=medium * jammy/linux: 5.15.0-70.77 -proposed tracker (LP: #2011918) * CVE-2023-26545 - net: mpls: fix stale pointer if allocation fails during device rename * CVE-2023-1281 - net/sched: tcindex: update imperfect hash filters respecting rcu * [SRU][Ubuntu 22.04.1] mpi3mr: Add management application interface(BSG) support (LP: #1971151) - scsi: mpi3mr: Add bsg device support - scsi: mpi3mr: Add support for driver commands - scsi: mpi3mr: Move data structures/definitions from MPI headers to uapi header - scsi: mpi3mr: Add support for MPT commands - scsi: mpi3mr: Add support for PEL commands - scsi: mpi3mr: Expose adapter state to sysfs - scsi: mpi3mr: Add support for NVMe passthrough - scsi: mpi3mr: Update driver version to 8.0.0.69.0 - scsi: mpi3mr: Increase I/O timeout value to 60s - scsi: mpi3mr: Hidden drives not removed during soft reset - scsi: mpi3mr: Return I/Os to an unrecoverable HBA with DID_ERROR - scsi: mpi3mr: Fix a NULL vs IS_ERR() bug in mpi3mr_bsg_init() - scsi: mpi3mr: Return error if dma_alloc_coherent() fails - scsi: mpi3mr: Add shost related sysfs attributes - scsi: mpi3mr: Add target device related sysfs attributes - scsi: mpi3mr: Rework mrioc->bsg_device model to fix warnings - scsi: mpi3mr: Fix kernel-doc * cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids (LP: #2008519) - cpufreq: intel_pstate: Update EPP for AlderLake mobile - cpufreq: intel_pstate: Adjust balance_performance EPP for Sapphire Rapids * Fail to output sound to external monitor which connects via docking station (LP: #2009024) - [Config] Enable CONFIG_SND_HDA_INTEL_HDMI_SILENT_STREAM * Fix mediatek wifi driver crash when loading wrong SAR table (LP: #2009118) - wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read * Jammy update: v5.15.92 upstream stable release (LP: #2011472) - ARM: dts: imx: Fix pca9547 i2c-mux node name - ARM: dts: vf610: Fix pca9548 i2c-mux node names - arm64: dts: freescale: Fix pca954x i2c-mux node names - arm64: dts: imx8mq-thor96: fix no-mmc property for SDHCI - firmware: arm_scmi: Clear stale xfer->hdr.status - bpf: Skip task with pid=1 in send_signal_common() - erofs/zmap.c: Fix incorrect offset calculation - blk-cgroup: fix missing pd_online_fn() while activating policy - HID: playstation: sanity check DualSense calibration data. - dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init - cifs: fix return of uninitialized rc in dfs_cache_update_tgthint() - extcon: usbc-tusb320: fix kernel-doc warning - Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt - tools: fix ARRAY_SIZE defines in tools and selftests hdrs - selftests/vm: remove ARRAY_SIZE define from individual tests - selftests: Provide local define of __cpuid_count() - net: fix NULL pointer in skb_segment_list - net: mctp: purge receive queues on sk destruction - Linux 5.15.92 * Jammy update: v5.15.91 upstream stable release (LP: #2011467) - memory: tegra: Remove clients SID override programming - memory: atmel-sdramc: Fix missing clk_disable_unprepare in atmel_ramc_probe() - memory: mvebu-devbus: Fix missing clk_disable_unprepare in mvebu_devbus_probe() - dmaengine: ti: k3-udma: Do conditional decrement of UDMA_CHAN_RT_PEER_BCNT_REG - arm64: dts: imx8mp-phycore-som: Remove invalid PMIC property - ARM: dts: imx6ul-pico-dwarf: Use 'clock-frequency' - ARM: dts: imx7d-pico: Use 'clock-frequency' - ARM: dts: imx6qdl-gw560x: Remove incorrect 'uart-has-rtscts' - arm64: dts: imx8mm-beacon: Fix ecspi2 pinmux - ARM: imx: add missing of_node_put() - HID: intel_ish-hid: Add check for ishtp_dma_tx_map - arm64: dts: imx8mm-venice-gw7901: fix USB2 controller OC polarity - soc: imx8m: Fix incorrect check for of_clk_get_by_name() - reset: uniphier-glue: Use reset_control_bulk API - reset: uniphier-glue: Fix possible null-ptr-deref - EDAC/highbank: Fix memory leak in highbank_mc_probe() - firmware: arm_scmi: Harden shared memory access in fetch_response - firmware: arm_scmi: Harden shared memory access in fetch_notification - tomoyo: fix broken dependency on *.conf.default - RDMA/core: Fix ib block iterator counter overflow - IB/hfi1: Reject a zero-length user expected buffer - IB/hfi1: Reserve user expected TIDs - IB/hfi1: Fix expected receive setup error exit issues - IB/hfi1: Immediately remove invalid memory from hardware - IB/hfi1: Remove user expected buffer invalidate race - affs: initialize fsdata in affs_truncate() - PM: AVS: qcom-cpr: Fix an error handling path in cpr_probe() - arm64: dts: qcom: msm8992: Don't use sfpb mutex - arm64:
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux/5.19.0-40.41 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-kinetic' to 'verification-done-kinetic'. If the problem still exists, change the tag 'verification-needed-kinetic' to 'verification-failed-kinetic'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-kinetic-linux verification-needed-kinetic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Kinetic: Fix Committed Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug is awaiting verification that the linux/5.15.0-70.77 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux verification-needed-jammy -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Kinetic: Fix Committed Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
This bug was fixed in the package linux - 6.2.0-18.18 --- linux (6.2.0-18.18) lunar; urgency=medium * lunar/linux: 6.2.0-18.18 -proposed tracker (LP: #2011750) * lunar/linux 6.2 fails to boot on arm64 (LP: #2011748) - SAUCE: Revert "efi: random: fix NULL-deref when refreshing seed" - SAUCE: Revert "efi: random: refresh non-volatile random seed when RNG is initialized" -- Andrea Righi Wed, 15 Mar 2023 23:54:18 +0100 ** Changed in: linux (Ubuntu Lunar) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Jammy: Fix Committed Status in linux source package in Kinetic: Fix Committed Status in linux source package in Lunar: Fix Released Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
** Changed in: linux (Ubuntu Lunar) Status: In Progress => Fix Committed ** Changed in: linux (Ubuntu Jammy) Status: In Progress => Fix Committed ** Changed in: linux (Ubuntu Kinetic) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Fix Committed Status in linux source package in Jammy: Fix Committed Status in linux source package in Kinetic: Fix Committed Status in linux source package in Lunar: Fix Committed Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
** Description changed: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == - This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. + This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change + which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. + For Jammy there is the additional risk of havind a different power usage + on Alderlake which is a Laptop CPU. However that change is part of v5.17 + and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: In Progress Status in linux source package in Jammy: In Progress Status in linux source package in Kinetic: In Progress Status in linux source package in Lunar: In Progress Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. For Jammy/5.15 this requires one additional change which introduces the EPP tweak for Alderlake. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. For Jammy there is the additional risk of havind a different power usage on Alderlake which is a Laptop CPU. However that change is part of v5.17 and thus would already be in effect with current 22.04 HWE. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
@Pragyansri, if you could point out one of the test loads usable to check the difference we would have it documented here. Right now not sure whether we have access to a Sapphire Rapids directly. But best to have all details in one place. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: In Progress Status in linux source package in Jammy: In Progress Status in linux source package in Kinetic: In Progress Status in linux source package in Lunar: In Progress Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
** Description changed: + [SRU Justification] + + == Impact == + See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. + + == Fix == + This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. + + == Test case == + + + == Regression Potential == + The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. + + == Original description == + [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: In Progress Status in linux source package in Jammy: In Progress Status in linux source package in Kinetic: In Progress Status in linux source package in Lunar: In Progress Bug description: [SRU Justification] == Impact == See original description. The goal is to adjust the behavior of the balanced governor for certain Xeon CPUs (those are CPUs rather seen in servers so there should be no impact on laptop users). While the initial request was Jammy/5.15 only we should do this to Kinetic and Lunar as well so the experience is the same regardless of release. == Fix == This picks one change from v6.3-rc1 which tweaks the intel_idle driver for a specific CPU model. == Test case == == Regression Potential == The change modifies how quickly CPUs scale up (and probably down) depending on workload. Power usage unlikely is of that much concern in server space. Maybe increased heat would be observed. == Original description == [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
** Also affects: linux (Ubuntu Lunar) Importance: Undecided Status: Incomplete ** Also affects: linux (Ubuntu Kinetic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Lunar) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Lunar) Status: Incomplete => In Progress ** Changed in: linux (Ubuntu Kinetic) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Kinetic) Status: New => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: In Progress Status in linux source package in Jammy: In Progress Status in linux source package in Kinetic: In Progress Status in linux source package in Lunar: In Progress Bug description: [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
The requested change is now upstream (v6.3-rc1) as commit 60675225ebeecea248035fd3a0efc82ae9038a98 Author: Srinivas Pandruvada Date: Tue Feb 21 22:45:26 2023 -0800 cpufreq: intel_pstate: Adjust balance_performance EPP for Sapphire Rapids ** Also affects: linux (Ubuntu Jammy) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Jammy) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Jammy) Status: New => In Progress ** Changed in: linux (Ubuntu Jammy) Assignee: (unassigned) => Stefan Bader (smb) ** Description changed: [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 - Commit ID: To be added + Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Incomplete Status in linux source package in Jammy: In Progress Bug description: [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
Commit ID: 60675225ebeecea248035fd3a0efc82ae9038a98 https://git.kernel.org/pub/scm/linux/kernel/git/next/linux- next.git/commit/drivers/cpufreq/intel_pstate.c?h=next-20230303=60675225ebeecea248035fd3a0efc82ae9038a98 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Incomplete Bug description: [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: To be added To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 2008519] Re: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids
** Changed in: intel Status: New => Fix Released -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2008519 Title: cpufreq: intel_pstate: Update Balance performance EPP for Sapphire Rapids Status in intel: Fix Released Status in linux package in Ubuntu: Incomplete Bug description: [Feature Description] Ubuntu uses powersave governor as the default.While the powersave governor has much lower power, the performance is lower than +25% for several workloads compared to performance governor. Report is published: www.Phoronix.com showing difference of 37% The goal here is to keep mean performance delta of powersave governor from performance governor around 10% to 12% by running wide variety of server workloads. For some bursty workload, this delta can be still large, as ramp up of frequency will still lag with powersave governor irrespective of EPP setting. The performance governor always requests maximum frequency. Based on experiments, EPP of 0x00, 0x10, 0x20, the performance delta for powersave governor is around 12%. But the EPP 0x20 has 18% lower average power. Also experiments are done by raising intel_pstate sysfs min_perf_pct as high as 50%. This didn't bring in any additional improvements compared to just changing EPP. Target Kernel: 6.3 Target Release: 22.04 (5.15 kernel) [HW/SW Information] Sapphire Rapids [Business Justification] Performance Improvements Upstream: Merged 6.3 Commit ID: To be added To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2008519/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
