Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752001AbcDBGMp (ORCPT ); Sat, 2 Apr 2016 02:12:45 -0400 Received: from mail-vk0-f50.google.com ([209.85.213.50]:36169 "EHLO mail-vk0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751231AbcDBGMn (ORCPT ); Sat, 2 Apr 2016 02:12:43 -0400 MIME-Version: 1.0 Reply-To: sedat.dilek@gmail.com In-Reply-To: <002301d18b59$d208fe50$761afaf0$@net> References: <1459376311.13525.108.camel@linux.intel.com> <003b01d18ad6$831941c0$894bc540$@net> <002301d18b59$d208fe50$761afaf0$@net> Date: Sat, 2 Apr 2016 08:12:42 +0200 Message-ID: Subject: Re: [intel-pstate driver regression] processor frequency very high even if in idle From: Sedat Dilek To: Doug Smythies Cc: Srinivas Pandruvada , "Rafael J. Wysocki" , =?UTF-8?Q?J=C3=B6rg_Otte?= , linux-pm@vger.kernel.org, LKML Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4053 Lines: 144 On Thu, Mar 31, 2016 at 4:30 PM, Doug Smythies wrote: > On 2016.03.31 01:11 Sedat Dilek wrote: >> On Thu, Mar 31, 2016 at 12:50 AM, Doug Smythies wrote: >>> On 2106.03.30 15:19 Srinivas Pandruvada wrote: >>>>> >>>>> Please see attached files. >>>>> >>>> Thanks. Your logs make sense. You have config set to performance mode >>>> by default (Which I believe default in all kernel Ubuntu). >>> >>> Yes, but via a startup script, by default Ubuntu sets the governor >>> to powersave 1 minute after boot (or ondemand if acpi-cpufreq). >>> >> >> Can you give more and precise informations on this? >> script-name etc. > > The script is /etc/init.d/ondemand > It sleeps for 1 minute and then sets the scaling > governor, based on availability, in the following order: > interactive > ondemand > powersave > Thanks for these informations. $ dpkg -S /etc/init.d/ondemand initscripts: /etc/init.d/ondemand For the followers... [ /etc/init.d/ondemand ] #! /bin/sh ### BEGIN INIT INFO # Provides: ondemand # Required-Start: $remote_fs $all # Required-Stop: # Default-Start: 2 3 4 5 # Default-Stop: # Short-Description: Set the CPU Frequency Scaling governor to "ondemand" ### END INIT INFO PATH=/sbin:/usr/sbin:/bin:/usr/bin . /lib/init/vars.sh . /lib/lsb/init-functions case "$1" in start) start-stop-daemon --start --background --exec /etc/init.d/ondemand -- background ;; background) sleep 60 # probably enough time for desktop login for CPUFREQ in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor do [ -f $CPUFREQ ] || continue echo -n ondemand > $CPUFREQ done ;; restart|reload|force-reload) echo "Error: argument '$1' not supported" >&2 exit 3 ;; stop) ;; *) echo "Usage: $0 start|stop" >&2 exit 3 ;; esac [ /etc/init.d/ondemand ] Will check... $ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor > See also: > > $ ls -l /etc/rc?.d/S06ondemand > lrwxrwxrwx 1 root root 18 Mar 8 09:51 /etc/rc2.d/S06ondemand -> ../init.d/ondemand > lrwxrwxrwx 1 root root 18 Mar 8 09:51 /etc/rc3.d/S06ondemand -> ../init.d/ondemand > lrwxrwxrwx 1 root root 18 Mar 8 09:51 /etc/rc4.d/S06ondemand -> ../init.d/ondemand > lrwxrwxrwx 1 root root 18 Mar 8 09:51 /etc/rc5.d/S06ondemand -> ../init.d/ondemand > Here it is S99... $ LC_ALL=C ls -l /etc/rc?.d/S*ondemand lrwxrwxrwx 1 root root 18 Mar 27 2012 /etc/rc2.d/S99ondemand -> ../init.d/ondemand lrwxrwxrwx 1 root root 18 Mar 27 2012 /etc/rc3.d/S99ondemand -> ../init.d/ondemand lrwxrwxrwx 1 root root 18 Mar 27 2012 /etc/rc4.d/S99ondemand -> ../init.d/ondemand lrwxrwxrwx 1 root root 18 Mar 27 2012 /etc/rc5.d/S99ondemand -> ../init.d/ondemand > From your other e-mail: > >> is somehow showing higher >> values than TSC_MHz. >> Not sure if this really make sense if TSC_MHz is a max-value (which I >> don't know it is). > > That is normal, and is turbo mode. Example: > > $ sudo turbostat -i 3 --msr=0x199 > CPU Avg_MHz %Busy Bzy_MHz TSC_MHz MSR 0x199 > - 478 12.53 3798 3413 0x00000000 > 0 3 0.09 3595 3413 0x00002500 > 4 1 0.03 3568 3413 0x00001000 > 1 4 0.11 3649 3413 0x00001200 > 5 2 0.07 3592 3413 0x00001000 > 2 3 0.08 3628 3413 0x00001000 > 6 1 0.03 3546 3413 0x00001000 > 3 1 0.02 3733 3413 0x00001000 > 7 3808 99.91 3799 3411 0x00002600 > Ah, OK. Thanks again. That helped me. I am trying CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y from linux-pm.git#linux-next out of curiosity... $ ./scripts/diffconfig /boot/config-$(uname -r) .config CPU_FREQ_DEFAULT_GOV_PERFORMANCE y -> n +CPU_FREQ_DEFAULT_GOV_SCHEDUTIL y +CPU_FREQ_GOV_ATTR_SET y +CPU_FREQ_GOV_SCHEDUTIL y ...will report. - sed@ - [1] https://en.wikipedia.org/wiki/Curiosity_killed_the_cat