[Kernel-packages] [Bug 1188647] Re: Please change intel_pstate default to disable
Kernel 3.15 contains some intel_pstate changes that should address the issues I raised in post 16 above. For Ubuntu one concern is: For the 250 Hz kernel the default sample rate will result in an actual different sample rate, and thus the response curve is a little different than for the 1000 Hz kernel. The desire is to have the default sample rate be 12 milliseconds instead of 10 (3 jiffies for 250 Hertz and 10 jiffies for 1000 Hz). This change is on the to-do list. This is probably a minor issue. For this change: intel_pstate: add sample time scaling I have a concern (and a ton of evidence to support it) that often, but very dependent on periodic workloads, the deferrable timer is delayed when it is not expected to be delayed, and sometimes by a huge amount (4 seconds). The result can be lower than expected CPU frequencies, because new the scale down code kicks in when it shouldn't. -- 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/1188647 Title: Please change intel_pstate default to disable Status in “linux” package in Ubuntu: Fix Released Bug description: 3.9 introduced a new default governor on SandyBridge CPUs called INTEL_PSTATE which, when built in and enabled (the default), removes all other governors (like our usual default, ondemand). 3.10 extended this to Ivybridge generation CPUs. In theory, this isn't an awful thing, as the new Intel pstate governor should be higher performance and give better power savings. In theory. In practice, it drives my CPUs to max frequency nearly constantly, spins my fans like mad and, somehow, does all of this while also eating enough CPU time in kernel threads to make my machine choppy, unresponsive, and unable to do simple things like play videos when I get off work. Therefore, I propose that we, for now, toggle intel_pstate to disable by default (I am using intel_pstate=disable on my command line right now, with great success), so it's still built in, and people can play with it, but it's off by default. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.9.0-4-generic 3.9.0-4.9 ProcVersionSignature: Ubuntu 3.9.0-4.9-generic 3.9.4 Uname: Linux 3.9.0-4-generic x86_64 ApportVersion: 2.10.2-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: adconrad 2574 F pulseaudio CurrentDmesg: [ 30.633035] init: plymouth-stop pre-start process (2079) terminated with status 1 [ 36.086916] br0: port 1(eth0) entered forwarding state Date: Fri Jun 7 08:48:56 2013 HibernationDevice: RESUME=UUID=73040efa-baec-458a-8307-3bca07b26c3c InstallationDate: Installed on 2012-12-09 (179 days ago) InstallationMedia: Ubuntu 13.04 Raring Ringtail - Alpha amd64 (20121209) MachineType: LENOVO 4173LPB MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.9.0-4-generic root=UUID=aad5-ef31-4428-973f-71740fc7cb6a ro intel_pstate=disable quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.9.0-4-generic N/A linux-backports-modules-3.9.0-4-generic N/A linux-firmware 1.109 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/13/2012 dmi.bios.vendor: LENOVO dmi.bios.version: 8CET55WW (1.35 ) dmi.board.asset.tag: Not Available dmi.board.name: 4173LPB dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8CET55WW(1.35):bd09/13/2012:svnLENOVO:pn4173LPB:pvrThinkPadT420s:rvnLENOVO:rn4173LPB:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4173LPB dmi.product.version: ThinkPad T420s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1188647/+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 1188647] Re: Please change intel_pstate default to disable
For the decision to re-enable the intel pstate driver by default or not, the suggestion is to be cautious. The driver keeps changing in rather fundamental ways, such that one can never be sure how it is going to perform. I will attach two graphs to (hopefully) help make my point. The first graph demonstrates a dramatic difference in CPU frequency scaling response as a function of load between kernel 3.12 and 3.15RC2 at a fixed idle (sleep) / work frequency. The second graph (to be posted in a moment) demonstrates a dramatic difference in CPU scaling frequency as a function of idle (sleep) /work frequency at a fixed load. Don't get me wrong here, as I am a proponent of the intel_pstate driver, but I am concerned about how its response to stimulus keeps changing. ** Attachment added: CPU 7 frequency vs load. Turbo on. Kernels 3.15RC2 and 3.12 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1188647/+attachment/4097698/+files/k315rc2_k312_load_sweep_200.png -- 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/1188647 Title: Please change intel_pstate default to disable Status in “linux” package in Ubuntu: Fix Released Bug description: 3.9 introduced a new default governor on SandyBridge CPUs called INTEL_PSTATE which, when built in and enabled (the default), removes all other governors (like our usual default, ondemand). 3.10 extended this to Ivybridge generation CPUs. In theory, this isn't an awful thing, as the new Intel pstate governor should be higher performance and give better power savings. In theory. In practice, it drives my CPUs to max frequency nearly constantly, spins my fans like mad and, somehow, does all of this while also eating enough CPU time in kernel threads to make my machine choppy, unresponsive, and unable to do simple things like play videos when I get off work. Therefore, I propose that we, for now, toggle intel_pstate to disable by default (I am using intel_pstate=disable on my command line right now, with great success), so it's still built in, and people can play with it, but it's off by default. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.9.0-4-generic 3.9.0-4.9 ProcVersionSignature: Ubuntu 3.9.0-4.9-generic 3.9.4 Uname: Linux 3.9.0-4-generic x86_64 ApportVersion: 2.10.2-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: adconrad 2574 F pulseaudio CurrentDmesg: [ 30.633035] init: plymouth-stop pre-start process (2079) terminated with status 1 [ 36.086916] br0: port 1(eth0) entered forwarding state Date: Fri Jun 7 08:48:56 2013 HibernationDevice: RESUME=UUID=73040efa-baec-458a-8307-3bca07b26c3c InstallationDate: Installed on 2012-12-09 (179 days ago) InstallationMedia: Ubuntu 13.04 Raring Ringtail - Alpha amd64 (20121209) MachineType: LENOVO 4173LPB MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.9.0-4-generic root=UUID=aad5-ef31-4428-973f-71740fc7cb6a ro intel_pstate=disable quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.9.0-4-generic N/A linux-backports-modules-3.9.0-4-generic N/A linux-firmware 1.109 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/13/2012 dmi.bios.vendor: LENOVO dmi.bios.version: 8CET55WW (1.35 ) dmi.board.asset.tag: Not Available dmi.board.name: 4173LPB dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8CET55WW(1.35):bd09/13/2012:svnLENOVO:pn4173LPB:pvrThinkPadT420s:rvnLENOVO:rn4173LPB:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4173LPB dmi.product.version: ThinkPad T420s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1188647/+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 1188647] Re: Please change intel_pstate default to disable
Graph 2 of 2. see previous comment. ** Attachment added: Sleep / load frequency sweep from 2 to 250 Hertz. Kernel 3.12 and 3.15RC2 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1188647/+attachment/4097699/+files/k315rc2_k312_freq_sweep.png -- 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/1188647 Title: Please change intel_pstate default to disable Status in “linux” package in Ubuntu: Fix Released Bug description: 3.9 introduced a new default governor on SandyBridge CPUs called INTEL_PSTATE which, when built in and enabled (the default), removes all other governors (like our usual default, ondemand). 3.10 extended this to Ivybridge generation CPUs. In theory, this isn't an awful thing, as the new Intel pstate governor should be higher performance and give better power savings. In theory. In practice, it drives my CPUs to max frequency nearly constantly, spins my fans like mad and, somehow, does all of this while also eating enough CPU time in kernel threads to make my machine choppy, unresponsive, and unable to do simple things like play videos when I get off work. Therefore, I propose that we, for now, toggle intel_pstate to disable by default (I am using intel_pstate=disable on my command line right now, with great success), so it's still built in, and people can play with it, but it's off by default. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.9.0-4-generic 3.9.0-4.9 ProcVersionSignature: Ubuntu 3.9.0-4.9-generic 3.9.4 Uname: Linux 3.9.0-4-generic x86_64 ApportVersion: 2.10.2-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: adconrad 2574 F pulseaudio CurrentDmesg: [ 30.633035] init: plymouth-stop pre-start process (2079) terminated with status 1 [ 36.086916] br0: port 1(eth0) entered forwarding state Date: Fri Jun 7 08:48:56 2013 HibernationDevice: RESUME=UUID=73040efa-baec-458a-8307-3bca07b26c3c InstallationDate: Installed on 2012-12-09 (179 days ago) InstallationMedia: Ubuntu 13.04 Raring Ringtail - Alpha amd64 (20121209) MachineType: LENOVO 4173LPB MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.9.0-4-generic root=UUID=aad5-ef31-4428-973f-71740fc7cb6a ro intel_pstate=disable quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.9.0-4-generic N/A linux-backports-modules-3.9.0-4-generic N/A linux-firmware 1.109 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/13/2012 dmi.bios.vendor: LENOVO dmi.bios.version: 8CET55WW (1.35 ) dmi.board.asset.tag: Not Available dmi.board.name: 4173LPB dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8CET55WW(1.35):bd09/13/2012:svnLENOVO:pn4173LPB:pvrThinkPadT420s:rvnLENOVO:rn4173LPB:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4173LPB dmi.product.version: ThinkPad T420s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1188647/+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 1254920] Re: CPU utilization / accounting issues
The issue is that all of those kernels work, the issue does not appear until the kernel configuration changes between saucy and trusty, as mentioned in my original posting. Without even knowing a good starting point, I tried a kernel bi-section, but with the new configuration and went back as far as I could. I.E. I was starting to get more and more kernels that wouldn't work at all, or even boot. I got back as far as what the bi-section stuff called linux- image-3.8.0-c05 and the problem persisted. So, I'm suggesting that the CPU utilization accounting issue has been there for quite some time, but perhaps has been masked by Ubuntu's kernel configuration (or I failed to notice it when the computer was running 13.10 and the display was also working). -- 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: Confirmed Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic #10-Ubuntu SMP Thu Nov 21 22:11:22 UTC 2013 i686 i686 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+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 1254920] Re: CPU utilization / accounting issues
After a month, and off course, I checked that the issue was still present with an up to date system when I added notes to this bug report a couple of hours ago, right? Well, due to incompetence on my part, I was not running the current 14.04 kernel, when I thought I was. This issue is fixed when I use the latest kernel. Setting status to fixed ** Changed in: linux (Ubuntu) Status: Confirmed = 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: Fix Released Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic #10-Ubuntu SMP Thu Nov 21 22:11:22 UTC 2013 i686 i686 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+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 1254920] Re: CPU utilization / accounting issues
@ Joseph Salisbury: Thank you for the suggestions. I would like to try to bisect the kernel. I am setup with GIT for my kernel.org version of the kernel. I have tried to bisect the kernel 3 times before, and succeeded once. I will have to study GIT again to remember how to do anything beyond git pull. I do not know the last kernel that did not exhibit the issue, since the issue depends on kernel configuration. The issue did not exist, as far as I know, in any saucy version, but I specifically tested this Ubuntu kernel: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/. Thanks also for the how to go upstream reference. I have gone upstream before, and based on your reference, I have made mistakes doing so. I'll wait for bisect results before going upstream. -- 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: Confirmed Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic #10-Ubuntu SMP Thu Nov 21 22:11:22 UTC 2013 i686 i686 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+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 1254920] Re: CPU utilization / accounting issues
I tried the Ubuntu kernel 3.13RC2, and the CPU user, sys, idle, and wait information making no sense at all issue remains. As I see it now, if there is a fb0 device, then the issue will exist: doug@test-smy:~$ ls -l /dev/fb0 crw-rw 1 root video 29, 0 Dec 1 08:25 /dev/fb0 If there is not a fb0 device, then the issue will not exist (but I have to use ssh to communicate with the server). It doesn't matter which frame buffer driver is used: Nov 30 19:34:26 test-smy kernel: [6.720259] vesafb: framebuffer at 0xf800, mapped to 0xc880, using 3072k, total 3072k Nov 29 15:22:34 test-smy kernel: [6.873147] simple-framebuffer simple-framebuffer.0: fb0: simplefb registered! as a side note, kernel 3.13 seems to use the simple-framebuffer, regardless of the VESA stuff being y in the config: doug@test-smy:~$ grep framebuffer /var/log/kern.log Dec 1 08:25:21 test-smy kernel: [6.734202] simple-framebuffer simple-framebuffer.0: framebuffer at 0xf800, 0x30 bytes, mapped to 0xc880 Dec 1 08:25:21 test-smy kernel: [6.734335] simple-framebuffer simple-framebuffer.0: format=r8g8b8, mode=1024x768x24, linelength=4096 Dec 1 08:25:21 test-smy kernel: [6.939867] simple-framebuffer simple-framebuffer.0: fb0: simplefb registered! I have searched bugzilla.kernel.org for any similar bug report and didn't find one (which doesn't mean there isn't one, just that I didn't find it). I compiled and tried the kernel 3.13RC2 from kernel.org, with the same results. I have not tried to compile and try a version with the config file reversions yet. Should I go upstream and file a bug on bugzilla.kernel.org? If yes, what would I file it under, as it is not clear to me? This issue appears to be related to recent work involving CONFIG_X86_SYSFB -- 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: Confirmed Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic
[Kernel-packages] [Bug 1254920] Re: CPU utilization / accounting issues
I have isolated the kernel configuration differences down to: doug@v32-serv03:~/kernel/linux-3.12.0$ diff config_def config_05 781c781 CONFIG_X86_SYSFB=y --- # CONFIG_X86_SYSFB is not set 4869c4869 CONFIG_FB_BOOT_VESA_SUPPORT=y --- # CONFIG_FB_BOOT_VESA_SUPPORT is not set 4900c4900 CONFIG_FB_VESA=y --- # CONFIG_FB_VESA is not set Where config_def is the default kernel configuration for the current Trusty kernel and config_05 has 3 reversions back to the way they were for Saucy. Each reversion by itself is not enough, they have to both (I lump the two VESA ones into one, because one can not change one without the other) be reverted. Note that the console display does not work when the reversions are done, and hasn't worked for most reversion attempts during this work. I use ssh to access the computer. Anticipated question: Why weren't display display issues mentioned previously? It's kind of an important point? Answer: Video display issues are very common on this computer when I start messing with kernels, so I didn't think it was significant earlier. ** Changed in: linux (Ubuntu) Status: Incomplete = Confirmed -- 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: Confirmed Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic #10-Ubuntu SMP Thu Nov 21 22:11:22 UTC 2013 i686 i686 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+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 1254920] Re: CPU utilization / accounting issues
I noticed some differences with the output of vmstat depending on the delay parameter. The attachment is a loop of vmstat command for delay = 1 to 50 in steps of 1. In a moment I will add the same thing but with the good kernel configuration. I have been trying to create a 14.04 i386 VM on my good computer to: Try to recreate the issue there, if possible; Make kernel compiling possible so as to start picking away at the config file differences. However, I am stuck as the Trusty daily server i386 ISO installation hangs at the grub step ( bug 1254904 ) ** Attachment added: various delays on vstat - bad config https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+attachment/3918409/+files/vmstat_loop_bad.log -- 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: Incomplete Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic #10-Ubuntu SMP Thu Nov 21 22:11:22 UTC 2013 i686 i686 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+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 1254920] Re: CPU utilization / accounting issues
** Attachment added: various delays on vstat - good config https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+attachment/3918412/+files/vmstat_loop_good.log -- 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: Incomplete Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic #10-Ubuntu SMP Thu Nov 21 22:11:22 UTC 2013 i686 i686 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+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 1254920] Re: CPU utilization / accounting issues
Yes, I already tried kernel 3.13RC1 a couple of days ago, and it was the same. I tried the one from the Ubuntu kernel PPA, not the one directly from kernel.org (as I mentioned in an earlier post, I can not compile the kernel on this computer). I tried many many kernels in an attempt to isolate the issue. In the end it appeared to be kernel configuration differences only, as mentioned in my first post. Hope this helps. -- 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: Incomplete Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic #10-Ubuntu SMP Thu Nov 21 22:11:22 UTC 2013 i686 i686 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+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 1254920] Re: CPU utilization / accounting issues
** Attachment added: sudo lspci -vnvn lspci-vnvn.log https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+attachment/3917141/+files/lspci-vnvn.log -- 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: New Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic #10-Ubuntu SMP Thu Nov 21 22:11:22 UTC 2013 i686 i686 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+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 1254920] Re: CPU utilization / accounting issues
** Attachment added: kernel config differences between saucy and trusty https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+attachment/3917140/+files/diff_config_saucy_trusty -- 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: New Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic #10-Ubuntu SMP Thu Nov 21 22:11:22 UTC 2013 i686 i686 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+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 1254920] Re: CPU utilization / accounting issues
To clarify, I am suggesting that the reported numbers are incorrect, not that there is some strange new loads going on. I did many tests with disk I/O and CPU loading and such to determine if there were any real increased overheads. Maybe a couple of percent of CPU OS increased overhead and a little more on disk I/O. Also, and in case anyone is interested, I graphed all of this stuff over many hours and two kernels. see: http://ubuntuforums.org/showthread.php?t=2189769 the graphs are there. ** Attachment added: The top info asked for. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+attachment/3917148/+files/top.out -- 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: Incomplete Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic #10-Ubuntu SMP Thu Nov 21 22:11:22 UTC 2013 i686 i686 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+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 1254920] Re: CPU utilization / accounting issues
apport-collect has never worked for me on server computers. I end up in some mess with my putty SSH connection and have never been able to figure it out. -- 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/1254920 Title: CPU utilization / accounting issues Status in “linux” package in Ubuntu: Incomplete Bug description: The issue is on a Trusty 32 bit server edition. It is the very very old computer that I use for minimum requirements testing. The issue is CPU user, sys, idle, and wait information makes absolutely no sense at all. For example with the commands top or vmstat I believe I have isolated the issue down to kernel configuration differences between Saucy and Trusty. I used the two otherwise same kernels from the ppa to come to this conclusion (after many many other kernels and such were tried). References: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-trusty/ While there are a lot of configuration differences that are obviously not the issue (or so I think), there are many that I don't know if they could be or not. The computer I am using is too pathetic to compile the kernel (it takes 34 hours, and then it gives up before finishing anyhow). I will attach the config difference file in a moment. Automatic bug stuff has never worked for me on any of my computers, but I'll attach the other stuff asked for shortly. Example of expected vmstat output (server relatively idle): doug@test-smy:~/configs$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0292 3952 4936 4866800 247 5 265 151 14 7 77 2 1 0292 3912 4944 4870800 2 2 252 50 0 0 100 0 1 0292 3912 4944 4870800 0 0 252 47 0 0 100 0 0 0292 3900 4952 4870800 0 2 252 49 0 0 99 1 0 0292 3900 4952 4870800 0 1 252 51 0 0 100 0 0 0292 2636 4960 499280061 1 253 56 0 0 99 1 Example of vmstat output now (server idle): doug@test-smy:~$ vmstat 20 procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 5312 5544 3408 479008 22 141278 24253 4209 44 30 9 17 0 0 5312 5528 3416 4791600 0 1 252 41 0 0 40 60 0 0 5312 5528 3416 4791600 0 0 251 40 0 25 0 75 0 0 5312 5528 3416 4791600 0 0 252 39 17 0 50 33 0 0 5312 5528 3416 4791600 0 0 252 39 0 0 40 60 0 0 5312 5516 3424 4791600 0 1 252 41 0 25 0 75 0 0 5312 5516 3424 4791600 0 0 252 40 0 17 33 50 doug@test-smy:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu Trusty Tahr (development branch) Release:14.04 Codename: trusty doug@test-smy:~$ uname -a Linux test-smy 3.12.0-4-generic #10-Ubuntu SMP Thu Nov 21 22:11:22 UTC 2013 i686 i686 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1254920/+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 1215665] Re: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes
This one can be set to Fix released. Does anyone disagree? -- 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/1215665 Title: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes Status in The Linux Kernel: In Progress Status in “linux” package in Ubuntu: Confirmed Bug description: I often run the current release candidate (RC) on a 12.04 server computer. When compiling any non-english PDF version of the Ubuntu server guide, one of the programs crashes (and creates a log, which I will attach shortly, but summary below). While it has been a very long time since I tried to compile a non-english PDF serverguide, I did more work to narrow down the issue: Kernel: Ubuntu 3.11 RC5 = No Problem (actually, all tested kernels = 3.11 RC5) Kernel: Kernel.org 3.11 RC5 = No Problem Kernel: Ubuntu 3.11 RC6 = Problem Kernel: Kernel.org 3.11 RC6 = Problem Someone else has reported the same issue ( http://ubuntuforums.org/showthread.php?t=2168771 ) # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x2b6061972239, pid=2950, tid=47114532034304 # # JRE version: 6.0_27-b27 # Java VM: OpenJDK 64-Bit Server VM (20.0-b12 mixed mode linux-amd64 compressed oops) # Derivative: IcedTea6 1.12.6 # Distribution: Ubuntu 12.04 LTS, package 6b27-1.12.6-1ubuntu0.12.04.2 # Problematic frame: # J java.lang.String.charAt(I)C # # An error report file with more information is saved as: # /home/doug/sguide-1310/cg01/hs_err_pid2950.log # # If you would like to submit a bug report, please include # instructions how to reproduce the bug and visit: # https://bugs.launchpad.net/ubuntu/+source/openjdk-6/ # Aborted (core dumped) make: *** [serverguide-pdf] Error 134 doug@s15:~/sguide-1310/cg01$ cat /proc/version_signature cat: /proc/version_signature: No such file or directory doug@s15:~/sguide-1310/cg01$ doug@s15:~/sguide-1310/cg01$ lsb_release -rd Description:Ubuntu 12.04.3 LTS Release:12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1215665/+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 1233479] Re: ondemand cpufreq governor does not scale CPU freq on Sandybridge
Please know when using the acpi-cpufreq driver what is shown in various places for CPU frequency can be wrong. The only way to know the actual CPU frequencies is via turbostat, as you are doing. -- 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/1233479 Title: ondemand cpufreq governor does not scale CPU freq on Sandybridge Status in “linux” package in Ubuntu: Confirmed Bug description: I notice that turbostat shows all cpus stuck at the minimum 800MHz (see attached log) on my system, even after rebooting twice. I used stress --cpu 8 to confirm that the frequencies remained at 800MHz even under load. It looks like the system is using the acpi-cpufreq driver with the ondemand governor (has the default been changed so it does not use intel p-state, as per https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1188647?). Edit: See comment #1 below - it looks like I can manually change the cpu freq, but the governor cannot. Also, switching to use intel pstate fixes the problem. The only unusual thing I had done prior to this was to boot into the weekly build of 3.12-rc3 just prior (this kernel kept the frequencies rather high, typically over 2GHz, ie using a lot more power than usual, so I rebooted back into the standard kernel). This is the contents of the files in /sys/devices/system/cpu/cpu0/cpufreq/: affected_cpus: 0 bios_limit: 2001000 cpuinfo_cur_freq: 80 cpuinfo_max_freq: 2001000 cpuinfo_min_freq: 80 cpuinfo_transition_latency: 1 freqdomain_cpus: 0 1 2 3 4 5 6 7 related_cpus: 0 scaling_available_frequencies: 2001000 200 190 180 170 160 150 140 130 120 110 100 90 80 scaling_available_governors: conservative ondemand userspace powersave performance scaling_cur_freq: 80 scaling_driver: acpi-cpufreq scaling_governor: ondemand scaling_max_freq: 2001000 scaling_min_freq: 80 scaling_setspeed: unsupported stats: ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-9-generic 3.11.0-9.16 ProcVersionSignature: Ubuntu 3.11.0-9.16-generic 3.11.2 Uname: Linux 3.11.0-9-generic x86_64 ApportVersion: 2.12.5-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: rocko 2813 F pulseaudio Date: Tue Oct 1 10:13:24 2013 InstallationDate: Installed on 2012-08-25 (401 days ago) InstallationMedia: Ubuntu 12.10 Quantal Quetzal - Alpha amd64 (20120724.2) MachineType: Dell Inc. Dell System XPS L502X MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-9-generic root=UUID=67083065-b92e-4596-a218-817c1dfc8ae7 ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.11.0-9-generic N/A linux-backports-modules-3.11.0-9-generic N/A linux-firmware1.115 SourcePackage: linux UpgradeStatus: Upgraded to saucy on 2013-09-01 (30 days ago) dmi.bios.date: 05/29/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A11 dmi.board.name: 0NJT03 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnDellInc.:bvrA11:bd05/29/2012:svnDellInc.:pnDellSystemXPSL502X:pvr:rvnDellInc.:rn0NJT03:rvrA00:cvnDellInc.:ct8:cvr0.1: dmi.product.name: Dell System XPS L502X dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1233479/+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 1233479] Re: ondemand cpufreq governor does not scale CPU freq on Sandybridge
By the way, ondemand mode using the acpi-cpufreq driver is working fine on my computer with a 3.11 kernel. doug@s15:~/temp$ uname -a Linux s15 3.11.2-031102-generic #201309262136 SMP Fri Sep 27 01:37:33 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux doug@s15:~/temp$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver acpi-cpufreq doug@s15:~/temp$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor ondemand ondemand ondemand ondemand ondemand ondemand ondemand ondemand I have a full load task running on CPU 7: doug@s15:~/temp$ sudo ./turbostat cr CPU%c0 GHz TSC%c1%c3%c6%c7 %pc2 %pc3 %pc6 %pc7 12.51 3.81 3.41 13.03 0.00 74.46 0.00 0.00 0.00 0.00 0.00 0 0 0.02 3.67 3.41 0.32 0.01 99.66 0.00 0.00 0.00 0.00 0.00 0 4 0.02 3.59 3.41 0.32 0.01 99.66 0.00 0.00 0.00 0.00 0.00 1 1 0.01 3.66 3.41 0.95 0.00 99.05 0.00 0.00 0.00 0.00 0.00 1 5 0.00 3.68 3.41 0.95 0.00 99.05 0.00 0.00 0.00 0.00 0.00 2 2 0.07 3.70 3.41 0.79 0.00 99.14 0.00 0.00 0.00 0.00 0.00 2 6 0.00 3.64 3.41 0.86 0.00 99.14 0.00 0.00 0.00 0.00 0.00 3 3 0.00 3.68 3.41 100.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3 7 99.97 3.81 3.41 0.03 0.00 0.00 0.00 0.00 0.00 0.00 0.00 CPU: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz -- 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/1233479 Title: ondemand cpufreq governor does not scale CPU freq on Sandybridge Status in “linux” package in Ubuntu: Confirmed Bug description: I notice that turbostat shows all cpus stuck at the minimum 800MHz (see attached log) on my system, even after rebooting twice. I used stress --cpu 8 to confirm that the frequencies remained at 800MHz even under load. It looks like the system is using the acpi-cpufreq driver with the ondemand governor (has the default been changed so it does not use intel p-state, as per https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1188647?). Edit: See comment #1 below - it looks like I can manually change the cpu freq, but the governor cannot. Also, switching to use intel pstate fixes the problem. The only unusual thing I had done prior to this was to boot into the weekly build of 3.12-rc3 just prior (this kernel kept the frequencies rather high, typically over 2GHz, ie using a lot more power than usual, so I rebooted back into the standard kernel). This is the contents of the files in /sys/devices/system/cpu/cpu0/cpufreq/: affected_cpus: 0 bios_limit: 2001000 cpuinfo_cur_freq: 80 cpuinfo_max_freq: 2001000 cpuinfo_min_freq: 80 cpuinfo_transition_latency: 1 freqdomain_cpus: 0 1 2 3 4 5 6 7 related_cpus: 0 scaling_available_frequencies: 2001000 200 190 180 170 160 150 140 130 120 110 100 90 80 scaling_available_governors: conservative ondemand userspace powersave performance scaling_cur_freq: 80 scaling_driver: acpi-cpufreq scaling_governor: ondemand scaling_max_freq: 2001000 scaling_min_freq: 80 scaling_setspeed: unsupported stats: ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-9-generic 3.11.0-9.16 ProcVersionSignature: Ubuntu 3.11.0-9.16-generic 3.11.2 Uname: Linux 3.11.0-9-generic x86_64 ApportVersion: 2.12.5-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: rocko 2813 F pulseaudio Date: Tue Oct 1 10:13:24 2013 InstallationDate: Installed on 2012-08-25 (401 days ago) InstallationMedia: Ubuntu 12.10 Quantal Quetzal - Alpha amd64 (20120724.2) MachineType: Dell Inc. Dell System XPS L502X MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-9-generic root=UUID=67083065-b92e-4596-a218-817c1dfc8ae7 ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.11.0-9-generic N/A linux-backports-modules-3.11.0-9-generic N/A linux-firmware1.115 SourcePackage: linux UpgradeStatus: Upgraded to saucy on 2013-09-01 (30 days ago) dmi.bios.date: 05/29/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A11 dmi.board.name: 0NJT03 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnDellInc.:bvrA11:bd05/29/2012:svnDellInc.:pnDellSystemXPSL502X:pvr:rvnDellInc.:rn0NJT03:rvrA00:cvnDellInc.:ct8:cvr0.1: dmi.product.name: Dell System XPS L502X dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1233479/+subscriptions -- Mailing list:
[Kernel-packages] [Bug 1233479] Re: ondemand cpufreq governor does not scale CPU freq on Sandybridge
All active cores share the same frequency. This is one of the misleading things about the acpi-cpufreq driver, it tends to show target frequencies not actual frequencies. See also the Intel 2nd gen core desktop vol 1 datasheet - Chapter 4 Power Management - Section 4.2 Processor Core Power Management - Sub- section 1 Enhanced Intel SpeedStep Technology - Bullet point 2 - 3rd sub-list entry (page 46 of the html or pdf): All active processor cores share the same frequency and voltage. In a multicore processor, the highest frequency P-state requested amongst all active cores is selected. ref: http://www.intel.com/content/www/us/en/processors/core/2nd-gen- core-desktop-vol-1-datasheet.html I do not know if anything was patched for Ubuntu's 3.11 kernel. I tested many, but not all, of the 3.11RC series, both Ubuntu and from kernel.org, but I was mainly working with the intel_pstate driver, and only using the acpi-cpufreq driver for comparative tests. -- 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/1233479 Title: ondemand cpufreq governor does not scale CPU freq on Sandybridge Status in “linux” package in Ubuntu: Confirmed Bug description: I notice that turbostat shows all cpus stuck at the minimum 800MHz (see attached log) on my system, even after rebooting twice. I used stress --cpu 8 to confirm that the frequencies remained at 800MHz even under load. It looks like the system is using the acpi-cpufreq driver with the ondemand governor (has the default been changed so it does not use intel p-state, as per https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1188647?). Edit: See comment #1 below - it looks like I can manually change the cpu freq, but the governor cannot. Also, switching to use intel pstate fixes the problem. The only unusual thing I had done prior to this was to boot into the weekly build of 3.12-rc3 just prior (this kernel kept the frequencies rather high, typically over 2GHz, ie using a lot more power than usual, so I rebooted back into the standard kernel). This is the contents of the files in /sys/devices/system/cpu/cpu0/cpufreq/: affected_cpus: 0 bios_limit: 2001000 cpuinfo_cur_freq: 80 cpuinfo_max_freq: 2001000 cpuinfo_min_freq: 80 cpuinfo_transition_latency: 1 freqdomain_cpus: 0 1 2 3 4 5 6 7 related_cpus: 0 scaling_available_frequencies: 2001000 200 190 180 170 160 150 140 130 120 110 100 90 80 scaling_available_governors: conservative ondemand userspace powersave performance scaling_cur_freq: 80 scaling_driver: acpi-cpufreq scaling_governor: ondemand scaling_max_freq: 2001000 scaling_min_freq: 80 scaling_setspeed: unsupported stats: ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-9-generic 3.11.0-9.16 ProcVersionSignature: Ubuntu 3.11.0-9.16-generic 3.11.2 Uname: Linux 3.11.0-9-generic x86_64 ApportVersion: 2.12.5-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: rocko 2813 F pulseaudio Date: Tue Oct 1 10:13:24 2013 InstallationDate: Installed on 2012-08-25 (401 days ago) InstallationMedia: Ubuntu 12.10 Quantal Quetzal - Alpha amd64 (20120724.2) MachineType: Dell Inc. Dell System XPS L502X MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-9-generic root=UUID=67083065-b92e-4596-a218-817c1dfc8ae7 ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.11.0-9-generic N/A linux-backports-modules-3.11.0-9-generic N/A linux-firmware1.115 SourcePackage: linux UpgradeStatus: Upgraded to saucy on 2013-09-01 (30 days ago) dmi.bios.date: 05/29/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A11 dmi.board.name: 0NJT03 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnDellInc.:bvrA11:bd05/29/2012:svnDellInc.:pnDellSystemXPSL502X:pvr:rvnDellInc.:rn0NJT03:rvrA00:cvnDellInc.:ct8:cvr0.1: dmi.product.name: Dell System XPS L502X dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1233479/+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 1215665] [NEW] With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes
Public bug reported: I often run the current release candidate (RC) on a 12.04 server computer. When compiling any non-english PDF version of the Ubuntu server guide, one of the programs crashes (and creates a log, which I will attach shortly, but summary below). While it has been a very long time since I tried to compile a non-english PDF serverguide, I did more work to narrow down the issue: Kernel: Ubuntu 3.11 RC5 = No Problem (actually, all tested kernels = 3.11 RC5) Kernel: Kernel.org 3.11 RC5 = No Problem Kernel: Ubuntu 3.11 RC6 = Problem Kernel: Kernel.org 3.11 RC6 = Problem Someone else has reported the same issue ( http://ubuntuforums.org/showthread.php?t=2168771 ) # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x2b6061972239, pid=2950, tid=47114532034304 # # JRE version: 6.0_27-b27 # Java VM: OpenJDK 64-Bit Server VM (20.0-b12 mixed mode linux-amd64 compressed oops) # Derivative: IcedTea6 1.12.6 # Distribution: Ubuntu 12.04 LTS, package 6b27-1.12.6-1ubuntu0.12.04.2 # Problematic frame: # J java.lang.String.charAt(I)C # # An error report file with more information is saved as: # /home/doug/sguide-1310/cg01/hs_err_pid2950.log # # If you would like to submit a bug report, please include # instructions how to reproduce the bug and visit: # https://bugs.launchpad.net/ubuntu/+source/openjdk-6/ # Aborted (core dumped) make: *** [serverguide-pdf] Error 134 doug@s15:~/sguide-1310/cg01$ cat /proc/version_signature cat: /proc/version_signature: No such file or directory doug@s15:~/sguide-1310/cg01$ doug@s15:~/sguide-1310/cg01$ lsb_release -rd Description:Ubuntu 12.04.3 LTS Release:12.04 ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Tags: precise -- 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/1215665 Title: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes Status in “linux” package in Ubuntu: Incomplete Bug description: I often run the current release candidate (RC) on a 12.04 server computer. When compiling any non-english PDF version of the Ubuntu server guide, one of the programs crashes (and creates a log, which I will attach shortly, but summary below). While it has been a very long time since I tried to compile a non-english PDF serverguide, I did more work to narrow down the issue: Kernel: Ubuntu 3.11 RC5 = No Problem (actually, all tested kernels = 3.11 RC5) Kernel: Kernel.org 3.11 RC5 = No Problem Kernel: Ubuntu 3.11 RC6 = Problem Kernel: Kernel.org 3.11 RC6 = Problem Someone else has reported the same issue ( http://ubuntuforums.org/showthread.php?t=2168771 ) # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x2b6061972239, pid=2950, tid=47114532034304 # # JRE version: 6.0_27-b27 # Java VM: OpenJDK 64-Bit Server VM (20.0-b12 mixed mode linux-amd64 compressed oops) # Derivative: IcedTea6 1.12.6 # Distribution: Ubuntu 12.04 LTS, package 6b27-1.12.6-1ubuntu0.12.04.2 # Problematic frame: # J java.lang.String.charAt(I)C # # An error report file with more information is saved as: # /home/doug/sguide-1310/cg01/hs_err_pid2950.log # # If you would like to submit a bug report, please include # instructions how to reproduce the bug and visit: # https://bugs.launchpad.net/ubuntu/+source/openjdk-6/ # Aborted (core dumped) make: *** [serverguide-pdf] Error 134 doug@s15:~/sguide-1310/cg01$ cat /proc/version_signature cat: /proc/version_signature: No such file or directory doug@s15:~/sguide-1310/cg01$ doug@s15:~/sguide-1310/cg01$ lsb_release -rd Description:Ubuntu 12.04.3 LTS Release:12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1215665/+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 1215665] Re: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes
One of the crash log files. ** Attachment added: One of the crash log files https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1215665/+attachment/3783402/+files/hs_err_pid3025.log -- 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/1215665 Title: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes Status in “linux” package in Ubuntu: Incomplete Bug description: I often run the current release candidate (RC) on a 12.04 server computer. When compiling any non-english PDF version of the Ubuntu server guide, one of the programs crashes (and creates a log, which I will attach shortly, but summary below). While it has been a very long time since I tried to compile a non-english PDF serverguide, I did more work to narrow down the issue: Kernel: Ubuntu 3.11 RC5 = No Problem (actually, all tested kernels = 3.11 RC5) Kernel: Kernel.org 3.11 RC5 = No Problem Kernel: Ubuntu 3.11 RC6 = Problem Kernel: Kernel.org 3.11 RC6 = Problem Someone else has reported the same issue ( http://ubuntuforums.org/showthread.php?t=2168771 ) # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x2b6061972239, pid=2950, tid=47114532034304 # # JRE version: 6.0_27-b27 # Java VM: OpenJDK 64-Bit Server VM (20.0-b12 mixed mode linux-amd64 compressed oops) # Derivative: IcedTea6 1.12.6 # Distribution: Ubuntu 12.04 LTS, package 6b27-1.12.6-1ubuntu0.12.04.2 # Problematic frame: # J java.lang.String.charAt(I)C # # An error report file with more information is saved as: # /home/doug/sguide-1310/cg01/hs_err_pid2950.log # # If you would like to submit a bug report, please include # instructions how to reproduce the bug and visit: # https://bugs.launchpad.net/ubuntu/+source/openjdk-6/ # Aborted (core dumped) make: *** [serverguide-pdf] Error 134 doug@s15:~/sguide-1310/cg01$ cat /proc/version_signature cat: /proc/version_signature: No such file or directory doug@s15:~/sguide-1310/cg01$ doug@s15:~/sguide-1310/cg01$ lsb_release -rd Description:Ubuntu 12.04.3 LTS Release:12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1215665/+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 1215665] Re: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes
** Attachment added: sudo lspci -vnvn lspci.log https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1215665/+attachment/3783403/+files/lspci.log -- 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/1215665 Title: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes Status in “linux” package in Ubuntu: Incomplete Bug description: I often run the current release candidate (RC) on a 12.04 server computer. When compiling any non-english PDF version of the Ubuntu server guide, one of the programs crashes (and creates a log, which I will attach shortly, but summary below). While it has been a very long time since I tried to compile a non-english PDF serverguide, I did more work to narrow down the issue: Kernel: Ubuntu 3.11 RC5 = No Problem (actually, all tested kernels = 3.11 RC5) Kernel: Kernel.org 3.11 RC5 = No Problem Kernel: Ubuntu 3.11 RC6 = Problem Kernel: Kernel.org 3.11 RC6 = Problem Someone else has reported the same issue ( http://ubuntuforums.org/showthread.php?t=2168771 ) # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x2b6061972239, pid=2950, tid=47114532034304 # # JRE version: 6.0_27-b27 # Java VM: OpenJDK 64-Bit Server VM (20.0-b12 mixed mode linux-amd64 compressed oops) # Derivative: IcedTea6 1.12.6 # Distribution: Ubuntu 12.04 LTS, package 6b27-1.12.6-1ubuntu0.12.04.2 # Problematic frame: # J java.lang.String.charAt(I)C # # An error report file with more information is saved as: # /home/doug/sguide-1310/cg01/hs_err_pid2950.log # # If you would like to submit a bug report, please include # instructions how to reproduce the bug and visit: # https://bugs.launchpad.net/ubuntu/+source/openjdk-6/ # Aborted (core dumped) make: *** [serverguide-pdf] Error 134 doug@s15:~/sguide-1310/cg01$ cat /proc/version_signature cat: /proc/version_signature: No such file or directory doug@s15:~/sguide-1310/cg01$ doug@s15:~/sguide-1310/cg01$ lsb_release -rd Description:Ubuntu 12.04.3 LTS Release:12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1215665/+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 1215665] Re: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes
apport-collect has never worked for me. Right now, and after entering apport-collect 1215665 I have some weird stuff on my puTTY session screen and I can not seem to find any way to either log in to launchpad from there or exit. ** Changed in: linux (Ubuntu) Status: Incomplete = Confirmed -- 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/1215665 Title: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes Status in “linux” package in Ubuntu: Confirmed Bug description: I often run the current release candidate (RC) on a 12.04 server computer. When compiling any non-english PDF version of the Ubuntu server guide, one of the programs crashes (and creates a log, which I will attach shortly, but summary below). While it has been a very long time since I tried to compile a non-english PDF serverguide, I did more work to narrow down the issue: Kernel: Ubuntu 3.11 RC5 = No Problem (actually, all tested kernels = 3.11 RC5) Kernel: Kernel.org 3.11 RC5 = No Problem Kernel: Ubuntu 3.11 RC6 = Problem Kernel: Kernel.org 3.11 RC6 = Problem Someone else has reported the same issue ( http://ubuntuforums.org/showthread.php?t=2168771 ) # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x2b6061972239, pid=2950, tid=47114532034304 # # JRE version: 6.0_27-b27 # Java VM: OpenJDK 64-Bit Server VM (20.0-b12 mixed mode linux-amd64 compressed oops) # Derivative: IcedTea6 1.12.6 # Distribution: Ubuntu 12.04 LTS, package 6b27-1.12.6-1ubuntu0.12.04.2 # Problematic frame: # J java.lang.String.charAt(I)C # # An error report file with more information is saved as: # /home/doug/sguide-1310/cg01/hs_err_pid2950.log # # If you would like to submit a bug report, please include # instructions how to reproduce the bug and visit: # https://bugs.launchpad.net/ubuntu/+source/openjdk-6/ # Aborted (core dumped) make: *** [serverguide-pdf] Error 134 doug@s15:~/sguide-1310/cg01$ cat /proc/version_signature cat: /proc/version_signature: No such file or directory doug@s15:~/sguide-1310/cg01$ doug@s15:~/sguide-1310/cg01$ lsb_release -rd Description:Ubuntu 12.04.3 LTS Release:12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1215665/+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 1215665] Re: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes
I am well aware of what you wrote. I was simply trying to help. -- 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/1215665 Title: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes Status in “linux” package in Ubuntu: Invalid Bug description: I often run the current release candidate (RC) on a 12.04 server computer. When compiling any non-english PDF version of the Ubuntu server guide, one of the programs crashes (and creates a log, which I will attach shortly, but summary below). While it has been a very long time since I tried to compile a non-english PDF serverguide, I did more work to narrow down the issue: Kernel: Ubuntu 3.11 RC5 = No Problem (actually, all tested kernels = 3.11 RC5) Kernel: Kernel.org 3.11 RC5 = No Problem Kernel: Ubuntu 3.11 RC6 = Problem Kernel: Kernel.org 3.11 RC6 = Problem Someone else has reported the same issue ( http://ubuntuforums.org/showthread.php?t=2168771 ) # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x2b6061972239, pid=2950, tid=47114532034304 # # JRE version: 6.0_27-b27 # Java VM: OpenJDK 64-Bit Server VM (20.0-b12 mixed mode linux-amd64 compressed oops) # Derivative: IcedTea6 1.12.6 # Distribution: Ubuntu 12.04 LTS, package 6b27-1.12.6-1ubuntu0.12.04.2 # Problematic frame: # J java.lang.String.charAt(I)C # # An error report file with more information is saved as: # /home/doug/sguide-1310/cg01/hs_err_pid2950.log # # If you would like to submit a bug report, please include # instructions how to reproduce the bug and visit: # https://bugs.launchpad.net/ubuntu/+source/openjdk-6/ # Aborted (core dumped) make: *** [serverguide-pdf] Error 134 doug@s15:~/sguide-1310/cg01$ cat /proc/version_signature cat: /proc/version_signature: No such file or directory doug@s15:~/sguide-1310/cg01$ doug@s15:~/sguide-1310/cg01$ lsb_release -rd Description:Ubuntu 12.04.3 LTS Release:12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1215665/+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 1215665] Re: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes
This issue occurs also with Kernels 3.10.8 and 3.10.9, but not 3.10.7. I was not looking for support with this bug report, I was wanting to make developers aware that something has gone wrong in just the last few days. In my opinion, I can not file a bug at bugzilla because: I do not know the specific area of the kernel to file it against; I only know how to reproduce the issue using Ubuntu specific stuff. -- 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/1215665 Title: With Kernel 3.11RC6 Ubuntu servguide PDF compile crashes Status in “linux” package in Ubuntu: Invalid Bug description: I often run the current release candidate (RC) on a 12.04 server computer. When compiling any non-english PDF version of the Ubuntu server guide, one of the programs crashes (and creates a log, which I will attach shortly, but summary below). While it has been a very long time since I tried to compile a non-english PDF serverguide, I did more work to narrow down the issue: Kernel: Ubuntu 3.11 RC5 = No Problem (actually, all tested kernels = 3.11 RC5) Kernel: Kernel.org 3.11 RC5 = No Problem Kernel: Ubuntu 3.11 RC6 = Problem Kernel: Kernel.org 3.11 RC6 = Problem Someone else has reported the same issue ( http://ubuntuforums.org/showthread.php?t=2168771 ) # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x2b6061972239, pid=2950, tid=47114532034304 # # JRE version: 6.0_27-b27 # Java VM: OpenJDK 64-Bit Server VM (20.0-b12 mixed mode linux-amd64 compressed oops) # Derivative: IcedTea6 1.12.6 # Distribution: Ubuntu 12.04 LTS, package 6b27-1.12.6-1ubuntu0.12.04.2 # Problematic frame: # J java.lang.String.charAt(I)C # # An error report file with more information is saved as: # /home/doug/sguide-1310/cg01/hs_err_pid2950.log # # If you would like to submit a bug report, please include # instructions how to reproduce the bug and visit: # https://bugs.launchpad.net/ubuntu/+source/openjdk-6/ # Aborted (core dumped) make: *** [serverguide-pdf] Error 134 doug@s15:~/sguide-1310/cg01$ cat /proc/version_signature cat: /proc/version_signature: No such file or directory doug@s15:~/sguide-1310/cg01$ doug@s15:~/sguide-1310/cg01$ lsb_release -rd Description:Ubuntu 12.04.3 LTS Release:12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1215665/+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
