Re: Improved Intel Turbo Boost status/control
On Mon, 2012-03-12 at 22:52 +0200, Alexander Motin wrote: On 03/12/12 22:45, Ian Lepore wrote: On Mon, 2012-03-12 at 21:15 +0200, Alexander Motin wrote: I'd like to note that recent r232793 change to cpufreq(4) in HEAD opened simple access to the Intel Turbo Boost status/control. I've found that at least two of my desktop systems (based Nehalem and SandyBridge Core i7s) with enabled Intel Turbo Boost in BIOS it is not use it by default, unless powerd is enabled. And before this change it was difficult to detect/fix. ACPI reports extra performance level with frequency 1MHz above the nominal to control Intel Turbo Boost operation. It is not a bug, but feature: dev.cpu.0.freq_levels: 2934/106000 2933/95000 2800/82000 ... In this case value 2933 means 2.93GHz, but 2934 means 3.2-3.6GHz. After boot with default settings I see: dev.cpu.0.freq: 2933 , that means Turbo Boost is disabled. Enabling powerd or just adding to rc.conf performance_cpu_freq=HIGH enables Turbo Boost and adds extra 10-20% to the system performance. Turbo Boost operation can be monitored in run-time via the PMC with command that prints number or really executed cycles per CPU core: pmcstat -s unhalted-core-cycles -w 1 The r232793 patch applies cleanly to 8-stable and builds just fine, but after install/reboot I don't see a change in the freq_levels revolution sysctl dev.cpu.0 dev.cpu.0.%desc: ACPI CPU dev.cpu.0.%driver: cpu dev.cpu.0.%location: handle=\_PR_.P001 dev.cpu.0.%pnpinfo: _HID=none _UID=0 dev.cpu.0.%parent: acpi0 dev.cpu.0.coretemp.delta: 70 dev.cpu.0.coretemp.resolution: 1 dev.cpu.0.coretemp.tjmax: 101.0C dev.cpu.0.coretemp.throttle_log: 0 dev.cpu.0.temperature: 31.0C dev.cpu.0.freq: dev.cpu.0.freq_levels: /13 3200/117000 3067/105000 2933/94000 2800/85000 2667/76000 2533/68000 2400/61000 2267/54000 2133/48000 2000/43000 1867/39000 1733/35000 1600/32000 1400/28000 1200/24000 1000/2 800/16000 600/12000 400/8000 200/4000 dev.cpu.0.cx_supported: C1/32 C2/96 C3/128 dev.cpu.0.cx_lowest: C1 dev.cpu.0.cx_usage: 100.00% 0.00% 0.00% last 657us revolution I would have expected a 3334 entry to appear after the reboot. Is this expected (like are there other required changes missing in 8-stable), or do I have something misconfigured? (I can post more info, but don't want to spam the list if the answer is going to be this shouldn't work in 8.x). I don't know any reason why it should not work on 8.x. It is ACPI BIOS duty to report set of frequencies. This patch just makes system to follow it more close. Make sure your CPU supports Turbo Boost and it is enabled in BIOS. On my system disabling Turbo Boost in BIOS removes the frequency from the list. It was indeed a bios config thing (I had it enabled, but then a side effect of one of my overclock settings caused the bios to quietly disable it). I got that straightened out, and now it's working great. Setting dev.cpu.0.freq=3334 cuts about 90 seconds off my standard workflow-benchmark (that's 90 seconds off a 20 minute compile/build process, a noticible improvement). I found that setting performance_cpu_freq=HIGH doesn't work on my desktop system, I guess because devd never gets any AC adapter events that trigger running the power_profile script. I enabled it manually by adding these lines to my /etc/sysctl.conf: hw.acpi.cpu.cx_lowest=C2 dev.cpu.0.freq=3334 It would be nice to come up with a way to automatically enable this for desktop users. If not fully automatic, hopefully require no more than a simple =YES knob in rc.conf. Thanks for this work, Alexander! I had assumed I was already getting turbo mode benefits automatically just because my chip supports it. It's a nice bonus to suddenly get another 7% improvement on my benchmark when I thought I was already tweaked for max performance. -- Ian ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Improved Intel Turbo Boost status/control
I found that setting performance_cpu_freq=HIGH doesn't work on my desktop system, I guess because devd never gets any AC adapter events that trigger running the power_profile script. I enabled it manually by adding these lines to my /etc/sysctl.conf: hw.acpi.cpu.cx_lowest=C2 dev.cpu.0.freq=3334 It would be nice to come up with a way to automatically enable this for desktop users. If not fully automatic, hopefully require no more than a simple =YES knob in rc.conf. I applied the patch to 2 desktop machines and added performance_cpu_freq=HIGH to rc.conf: 8.3-PRERELEASE #3 r232864M: Mon Mar 12 16:11:47 PDT 2012 dev.cpu.0.freq: 2927 dev.cpu.0.freq_levels: 2927/95000 2926/95000 2793/78000 2660/7 ... 9.0-STABLE FreeBSD 9.0-STABLE #0 r232923M: Tue Mar 13 10:06:33 PDT 2012 dev.cpu.0.freq: 3301 dev.cpu.0.freq_levels: 3301/95000 3300/95000 3100/87000 2900/8 ... so it appears to be working for me automatically. John Theus TheUs Group TheUsGroup.com ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Improved Intel Turbo Boost status/control
В Mon, 12 Mar 2012 21:15:35 +0200 Alexander Motin m...@freebsd.org пишет: Hi. I'd like to note that recent r232793 change to cpufreq(4) in HEAD opened simple access to the Intel Turbo Boost status/control. I've found that at least two of my desktop systems (based Nehalem and SandyBridge Core i7s) with enabled Intel Turbo Boost in BIOS it is not use it by default, unless powerd is enabled. And before this change it was difficult to detect/fix. ACPI reports extra performance level with frequency 1MHz above the nominal to control Intel Turbo Boost operation. It is not a bug, but feature: dev.cpu.0.freq_levels: 2934/106000 2933/95000 2800/82000 ... In this case value 2933 means 2.93GHz, but 2934 means 3.2-3.6GHz. After boot with default settings I see: dev.cpu.0.freq: 2933 , that means Turbo Boost is disabled. Enabling powerd or just adding to rc.conf performance_cpu_freq=HIGH enables Turbo Boost and adds extra 10-20% to the system performance. Turbo Boost operation can be monitored in run-time via the PMC with command that prints number or really executed cycles per CPU core: pmcstat -s unhalted-core-cycles -w 1 Thank you very much! performance_cpu_freq=HIGH and as this option must be combined with state of the processor C1 C2 C3? performance_cx_lowest=XX economy_cx_lowest=XX ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Improved Intel Turbo Boost status/control
On 03/12/12 21:33, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:15:35 +0200 Alexander Motinm...@freebsd.org пишет: I'd like to note that recent r232793 change to cpufreq(4) in HEAD opened simple access to the Intel Turbo Boost status/control. I've found that at least two of my desktop systems (based Nehalem and SandyBridge Core i7s) with enabled Intel Turbo Boost in BIOS it is not use it by default, unless powerd is enabled. And before this change it was difficult to detect/fix. ACPI reports extra performance level with frequency 1MHz above the nominal to control Intel Turbo Boost operation. It is not a bug, but feature: dev.cpu.0.freq_levels: 2934/106000 2933/95000 2800/82000 ... In this case value 2933 means 2.93GHz, but 2934 means 3.2-3.6GHz. After boot with default settings I see: dev.cpu.0.freq: 2933 , that means Turbo Boost is disabled. Enabling powerd or just adding to rc.conf performance_cpu_freq=HIGH enables Turbo Boost and adds extra 10-20% to the system performance. Turbo Boost operation can be monitored in run-time via the PMC with command that prints number or really executed cycles per CPU core: pmcstat -s unhalted-core-cycles -w 1 Thank you very much! performance_cpu_freq=HIGH and as this option must be combined with state of the processor C1 C2 C3? performance_cx_lowest=XX economy_cx_lowest=XX The more CPU cores on package are sleeping and the deeper they are sleeping, the bigger will be boost for remaining active cores. Without using deeper C-states boost is usually quite small (about 100-200MHz for desktop chips). Enabling C-states increases it in few times. -- Alexander Motin ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Improved Intel Turbo Boost status/control
В Mon, 12 Mar 2012 21:55:21 +0200 Alexander Motin m...@freebsd.org пишет: On 03/12/12 21:33, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:15:35 +0200 Alexander Motinm...@freebsd.org пишет: I'd like to note that recent r232793 change to cpufreq(4) in HEAD opened simple access to the Intel Turbo Boost status/control. I've found that at least two of my desktop systems (based Nehalem and SandyBridge Core i7s) with enabled Intel Turbo Boost in BIOS it is not use it by default, unless powerd is enabled. And before this change it was difficult to detect/fix. ACPI reports extra performance level with frequency 1MHz above the nominal to control Intel Turbo Boost operation. It is not a bug, but feature: dev.cpu.0.freq_levels: 2934/106000 2933/95000 2800/82000 ... In this case value 2933 means 2.93GHz, but 2934 means 3.2-3.6GHz. After boot with default settings I see: dev.cpu.0.freq: 2933 , that means Turbo Boost is disabled. Enabling powerd or just adding to rc.conf performance_cpu_freq=HIGH enables Turbo Boost and adds extra 10-20% to the system performance. Turbo Boost operation can be monitored in run-time via the PMC with command that prints number or really executed cycles per CPU core: pmcstat -s unhalted-core-cycles -w 1 Thank you very much! performance_cpu_freq=HIGH and as this option must be combined with state of the processor C1 C2 C3? performance_cx_lowest=XX economy_cx_lowest=XX The more CPU cores on package are sleeping and the deeper they are sleeping, the bigger will be boost for remaining active cores. Without using deeper C-states boost is usually quite small (about 100-200MHz for desktop chips). Enabling C-states increases it in few times. I have a Core i5 c Turbo Boost technology (enabled in BIOS) After the following: sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 performance_cpu_freq=HIGH /etc/rc.conf /etc/rc.d/powerd restart sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 CPU frequency does not rise above 2300 Mhz What am I doing wrong? ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Improved Intel Turbo Boost status/control
On 03/12/12 22:05, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:55:21 +0200 Alexander Motinm...@freebsd.org пишет: On 03/12/12 21:33, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:15:35 +0200 Alexander Motinm...@freebsd.org пишет: I'd like to note that recent r232793 change to cpufreq(4) in HEAD opened simple access to the Intel Turbo Boost status/control. I've found that at least two of my desktop systems (based Nehalem and SandyBridge Core i7s) with enabled Intel Turbo Boost in BIOS it is not use it by default, unless powerd is enabled. And before this change it was difficult to detect/fix. ACPI reports extra performance level with frequency 1MHz above the nominal to control Intel Turbo Boost operation. It is not a bug, but feature: dev.cpu.0.freq_levels: 2934/106000 2933/95000 2800/82000 ... In this case value 2933 means 2.93GHz, but 2934 means 3.2-3.6GHz. After boot with default settings I see: dev.cpu.0.freq: 2933 , that means Turbo Boost is disabled. Enabling powerd or just adding to rc.conf performance_cpu_freq=HIGH enables Turbo Boost and adds extra 10-20% to the system performance. Turbo Boost operation can be monitored in run-time via the PMC with command that prints number or really executed cycles per CPU core: pmcstat -s unhalted-core-cycles -w 1 Thank you very much! performance_cpu_freq=HIGH and as this option must be combined with state of the processor C1 C2 C3? performance_cx_lowest=XX economy_cx_lowest=XX The more CPU cores on package are sleeping and the deeper they are sleeping, the bigger will be boost for remaining active cores. Without using deeper C-states boost is usually quite small (about 100-200MHz for desktop chips). Enabling C-states increases it in few times. I have a Core i5 c Turbo Boost technology (enabled in BIOS) After the following: sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 performance_cpu_freq=HIGH /etc/rc.conf /etc/rc.d/powerd restart sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 CPU frequency does not rise above 2300 Mhz What am I doing wrong? performance_cpu_freq variable handled not by /etc/rc.d/powerd, but /etc/rc.d/power_profile. -- Alexander Motin ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Improved Intel Turbo Boost status/control
В Mon, 12 Mar 2012 22:11:28 +0200 Alexander Motin m...@freebsd.org пишет: On 03/12/12 22:05, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:55:21 +0200 Alexander Motinm...@freebsd.org пишет: On 03/12/12 21:33, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:15:35 +0200 Alexander Motinm...@freebsd.org пишет: I'd like to note that recent r232793 change to cpufreq(4) in HEAD opened simple access to the Intel Turbo Boost status/control. I've found that at least two of my desktop systems (based Nehalem and SandyBridge Core i7s) with enabled Intel Turbo Boost in BIOS it is not use it by default, unless powerd is enabled. And before this change it was difficult to detect/fix. ACPI reports extra performance level with frequency 1MHz above the nominal to control Intel Turbo Boost operation. It is not a bug, but feature: dev.cpu.0.freq_levels: 2934/106000 2933/95000 2800/82000 ... In this case value 2933 means 2.93GHz, but 2934 means 3.2-3.6GHz. After boot with default settings I see: dev.cpu.0.freq: 2933 , that means Turbo Boost is disabled. Enabling powerd or just adding to rc.conf performance_cpu_freq=HIGH enables Turbo Boost and adds extra 10-20% to the system performance. Turbo Boost operation can be monitored in run-time via the PMC with command that prints number or really executed cycles per CPU core: pmcstat -s unhalted-core-cycles -w 1 Thank you very much! performance_cpu_freq=HIGH and as this option must be combined with state of the processor C1 C2 C3? performance_cx_lowest=XX economy_cx_lowest=XX The more CPU cores on package are sleeping and the deeper they are sleeping, the bigger will be boost for remaining active cores. Without using deeper C-states boost is usually quite small (about 100-200MHz for desktop chips). Enabling C-states increases it in few times. I have a Core i5 c Turbo Boost technology (enabled in BIOS) After the following: sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 performance_cpu_freq=HIGH /etc/rc.conf /etc/rc.d/powerd restart sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 CPU frequency does not rise above 2300 Mhz What am I doing wrong? performance_cpu_freq variable handled not by /etc/rc.d/powerd, but /etc/rc.d/power_profile. ok I remove and insert power supply unit connector - nothing has changed... sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Improved Intel Turbo Boost status/control
В Mon, 12 Mar 2012 22:11:28 +0200 Alexander Motin m...@freebsd.org пишет: On 03/12/12 22:05, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:55:21 +0200 Alexander Motinm...@freebsd.org пишет: On 03/12/12 21:33, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:15:35 +0200 Alexander Motinm...@freebsd.org пишет: I'd like to note that recent r232793 change to cpufreq(4) in HEAD opened simple access to the Intel Turbo Boost status/control. I've found that at least two of my desktop systems (based Nehalem and SandyBridge Core i7s) with enabled Intel Turbo Boost in BIOS it is not use it by default, unless powerd is enabled. And before this change it was difficult to detect/fix. ACPI reports extra performance level with frequency 1MHz above the nominal to control Intel Turbo Boost operation. It is not a bug, but feature: dev.cpu.0.freq_levels: 2934/106000 2933/95000 2800/82000 ... In this case value 2933 means 2.93GHz, but 2934 means 3.2-3.6GHz. After boot with default settings I see: dev.cpu.0.freq: 2933 , that means Turbo Boost is disabled. Enabling powerd or just adding to rc.conf performance_cpu_freq=HIGH enables Turbo Boost and adds extra 10-20% to the system performance. Turbo Boost operation can be monitored in run-time via the PMC with command that prints number or really executed cycles per CPU core: pmcstat -s unhalted-core-cycles -w 1 Thank you very much! performance_cpu_freq=HIGH and as this option must be combined with state of the processor C1 C2 C3? performance_cx_lowest=XX economy_cx_lowest=XX The more CPU cores on package are sleeping and the deeper they are sleeping, the bigger will be boost for remaining active cores. Without using deeper C-states boost is usually quite small (about 100-200MHz for desktop chips). Enabling C-states increases it in few times. I have a Core i5 c Turbo Boost technology (enabled in BIOS) After the following: sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 performance_cpu_freq=HIGH /etc/rc.conf /etc/rc.d/powerd restart sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 CPU frequency does not rise above 2300 Mhz What am I doing wrong? performance_cpu_freq variable handled not by /etc/rc.d/powerd, but /etc/rc.d/power_profile. hm :( hw.acpi.acline: 1 no change status :( apparently something is broken with ACPI ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Improved Intel Turbo Boost status/control
On 03/12/12 22:22, Ivan Klymenko wrote: В Mon, 12 Mar 2012 22:11:28 +0200 Alexander Motinm...@freebsd.org пишет: On 03/12/12 22:05, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:55:21 +0200 Alexander Motinm...@freebsd.org пишет: On 03/12/12 21:33, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:15:35 +0200 Alexander Motinm...@freebsd.orgпишет: I'd like to note that recent r232793 change to cpufreq(4) in HEAD opened simple access to the Intel Turbo Boost status/control. I've found that at least two of my desktop systems (based Nehalem and SandyBridge Core i7s) with enabled Intel Turbo Boost in BIOS it is not use it by default, unless powerd is enabled. And before this change it was difficult to detect/fix. ACPI reports extra performance level with frequency 1MHz above the nominal to control Intel Turbo Boost operation. It is not a bug, but feature: dev.cpu.0.freq_levels: 2934/106000 2933/95000 2800/82000 ... In this case value 2933 means 2.93GHz, but 2934 means 3.2-3.6GHz. After boot with default settings I see: dev.cpu.0.freq: 2933 , that means Turbo Boost is disabled. Enabling powerd or just adding to rc.conf performance_cpu_freq=HIGH enables Turbo Boost and adds extra 10-20% to the system performance. Turbo Boost operation can be monitored in run-time via the PMC with command that prints number or really executed cycles per CPU core: pmcstat -s unhalted-core-cycles -w 1 Thank you very much! performance_cpu_freq=HIGH and as this option must be combined with state of the processor C1 C2 C3? performance_cx_lowest=XX economy_cx_lowest=XX The more CPU cores on package are sleeping and the deeper they are sleeping, the bigger will be boost for remaining active cores. Without using deeper C-states boost is usually quite small (about 100-200MHz for desktop chips). Enabling C-states increases it in few times. I have a Core i5 c Turbo Boost technology (enabled in BIOS) After the following: sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 performance_cpu_freq=HIGH /etc/rc.conf /etc/rc.d/powerd restart sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 CPU frequency does not rise above 2300 Mhz What am I doing wrong? performance_cpu_freq variable handled not by /etc/rc.d/powerd, but /etc/rc.d/power_profile. ok I remove and insert power supply unit connector - nothing has changed... sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 What changes do you expect to see in dev.cpu.0.freq_levels? This list is static. It is dev.cpu.0.freq that may change and that is where difference between 2301 and 2300 should now have effect. -- Alexander Motin ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Improved Intel Turbo Boost status/control
On Mon, 2012-03-12 at 21:15 +0200, Alexander Motin wrote: Hi. I'd like to note that recent r232793 change to cpufreq(4) in HEAD opened simple access to the Intel Turbo Boost status/control. I've found that at least two of my desktop systems (based Nehalem and SandyBridge Core i7s) with enabled Intel Turbo Boost in BIOS it is not use it by default, unless powerd is enabled. And before this change it was difficult to detect/fix. ACPI reports extra performance level with frequency 1MHz above the nominal to control Intel Turbo Boost operation. It is not a bug, but feature: dev.cpu.0.freq_levels: 2934/106000 2933/95000 2800/82000 ... In this case value 2933 means 2.93GHz, but 2934 means 3.2-3.6GHz. After boot with default settings I see: dev.cpu.0.freq: 2933 , that means Turbo Boost is disabled. Enabling powerd or just adding to rc.conf performance_cpu_freq=HIGH enables Turbo Boost and adds extra 10-20% to the system performance. Turbo Boost operation can be monitored in run-time via the PMC with command that prints number or really executed cycles per CPU core: pmcstat -s unhalted-core-cycles -w 1 The r232793 patch applies cleanly to 8-stable and builds just fine, but after install/reboot I don't see a change in the freq_levels revolution sysctl dev.cpu.0 dev.cpu.0.%desc: ACPI CPU dev.cpu.0.%driver: cpu dev.cpu.0.%location: handle=\_PR_.P001 dev.cpu.0.%pnpinfo: _HID=none _UID=0 dev.cpu.0.%parent: acpi0 dev.cpu.0.coretemp.delta: 70 dev.cpu.0.coretemp.resolution: 1 dev.cpu.0.coretemp.tjmax: 101.0C dev.cpu.0.coretemp.throttle_log: 0 dev.cpu.0.temperature: 31.0C dev.cpu.0.freq: dev.cpu.0.freq_levels: /13 3200/117000 3067/105000 2933/94000 2800/85000 2667/76000 2533/68000 2400/61000 2267/54000 2133/48000 2000/43000 1867/39000 1733/35000 1600/32000 1400/28000 1200/24000 1000/2 800/16000 600/12000 400/8000 200/4000 dev.cpu.0.cx_supported: C1/32 C2/96 C3/128 dev.cpu.0.cx_lowest: C1 dev.cpu.0.cx_usage: 100.00% 0.00% 0.00% last 657us revolution I would have expected a 3334 entry to appear after the reboot. Is this expected (like are there other required changes missing in 8-stable), or do I have something misconfigured? (I can post more info, but don't want to spam the list if the answer is going to be this shouldn't work in 8.x). -- Ian ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Improved Intel Turbo Boost status/control
В Mon, 12 Mar 2012 22:38:16 +0200 Alexander Motin m...@freebsd.org пишет: On 03/12/12 22:22, Ivan Klymenko wrote: В Mon, 12 Mar 2012 22:11:28 +0200 Alexander Motinm...@freebsd.org пишет: On 03/12/12 22:05, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:55:21 +0200 Alexander Motinm...@freebsd.org пишет: On 03/12/12 21:33, Ivan Klymenko wrote: В Mon, 12 Mar 2012 21:15:35 +0200 Alexander Motinm...@freebsd.orgпишет: I'd like to note that recent r232793 change to cpufreq(4) in HEAD opened simple access to the Intel Turbo Boost status/control. I've found that at least two of my desktop systems (based Nehalem and SandyBridge Core i7s) with enabled Intel Turbo Boost in BIOS it is not use it by default, unless powerd is enabled. And before this change it was difficult to detect/fix. ACPI reports extra performance level with frequency 1MHz above the nominal to control Intel Turbo Boost operation. It is not a bug, but feature: dev.cpu.0.freq_levels: 2934/106000 2933/95000 2800/82000 ... In this case value 2933 means 2.93GHz, but 2934 means 3.2-3.6GHz. After boot with default settings I see: dev.cpu.0.freq: 2933 , that means Turbo Boost is disabled. Enabling powerd or just adding to rc.conf performance_cpu_freq=HIGH enables Turbo Boost and adds extra 10-20% to the system performance. Turbo Boost operation can be monitored in run-time via the PMC with command that prints number or really executed cycles per CPU core: pmcstat -s unhalted-core-cycles -w 1 Thank you very much! performance_cpu_freq=HIGH and as this option must be combined with state of the processor C1 C2 C3? performance_cx_lowest=XX economy_cx_lowest=XX The more CPU cores on package are sleeping and the deeper they are sleeping, the bigger will be boost for remaining active cores. Without using deeper C-states boost is usually quite small (about 100-200MHz for desktop chips). Enabling C-states increases it in few times. I have a Core i5 c Turbo Boost technology (enabled in BIOS) After the following: sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 performance_cpu_freq=HIGH /etc/rc.conf /etc/rc.d/powerd restart sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 CPU frequency does not rise above 2300 Mhz What am I doing wrong? performance_cpu_freq variable handled not by /etc/rc.d/powerd, but /etc/rc.d/power_profile. ok I remove and insert power supply unit connector - nothing has changed... sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 2301/35000 2300/35000 2000/29079 1800/25766 1600/22265 1400/18904 1225/16541 1200/15996 1050/13996 1000/12907 875/11293 800/9956 700/8711 600/7467 500/6222 400/4978 300/3733 200/2489 100/1244 What changes do you expect to see in dev.cpu.0.freq_levels? This list is static. It is dev.cpu.0.freq that may change and that is where difference between 2301 and 2300 should now have effect. I expected that I should be a value greater than 35000 when 2301... it is the same as the next 2300... ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Improved Intel Turbo Boost status/control
On 03/12/12 22:45, Ian Lepore wrote: On Mon, 2012-03-12 at 21:15 +0200, Alexander Motin wrote: I'd like to note that recent r232793 change to cpufreq(4) in HEAD opened simple access to the Intel Turbo Boost status/control. I've found that at least two of my desktop systems (based Nehalem and SandyBridge Core i7s) with enabled Intel Turbo Boost in BIOS it is not use it by default, unless powerd is enabled. And before this change it was difficult to detect/fix. ACPI reports extra performance level with frequency 1MHz above the nominal to control Intel Turbo Boost operation. It is not a bug, but feature: dev.cpu.0.freq_levels: 2934/106000 2933/95000 2800/82000 ... In this case value 2933 means 2.93GHz, but 2934 means 3.2-3.6GHz. After boot with default settings I see: dev.cpu.0.freq: 2933 , that means Turbo Boost is disabled. Enabling powerd or just adding to rc.conf performance_cpu_freq=HIGH enables Turbo Boost and adds extra 10-20% to the system performance. Turbo Boost operation can be monitored in run-time via the PMC with command that prints number or really executed cycles per CPU core: pmcstat -s unhalted-core-cycles -w 1 The r232793 patch applies cleanly to 8-stable and builds just fine, but after install/reboot I don't see a change in the freq_levels revolution sysctl dev.cpu.0 dev.cpu.0.%desc: ACPI CPU dev.cpu.0.%driver: cpu dev.cpu.0.%location: handle=\_PR_.P001 dev.cpu.0.%pnpinfo: _HID=none _UID=0 dev.cpu.0.%parent: acpi0 dev.cpu.0.coretemp.delta: 70 dev.cpu.0.coretemp.resolution: 1 dev.cpu.0.coretemp.tjmax: 101.0C dev.cpu.0.coretemp.throttle_log: 0 dev.cpu.0.temperature: 31.0C dev.cpu.0.freq: dev.cpu.0.freq_levels: /13 3200/117000 3067/105000 2933/94000 2800/85000 2667/76000 2533/68000 2400/61000 2267/54000 2133/48000 2000/43000 1867/39000 1733/35000 1600/32000 1400/28000 1200/24000 1000/2 800/16000 600/12000 400/8000 200/4000 dev.cpu.0.cx_supported: C1/32 C2/96 C3/128 dev.cpu.0.cx_lowest: C1 dev.cpu.0.cx_usage: 100.00% 0.00% 0.00% last 657us revolution I would have expected a 3334 entry to appear after the reboot. Is this expected (like are there other required changes missing in 8-stable), or do I have something misconfigured? (I can post more info, but don't want to spam the list if the answer is going to be this shouldn't work in 8.x). I don't know any reason why it should not work on 8.x. It is ACPI BIOS duty to report set of frequencies. This patch just makes system to follow it more close. Make sure your CPU supports Turbo Boost and it is enabled in BIOS. On my system disabling Turbo Boost in BIOS removes the frequency from the list. -- Alexander Motin ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
