[Bug 66581] New: intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

[Bug 66581] New: intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=66581

            Bug ID: 66581
           Summary: intel_pstate/powersave - cpu frequency remains at high
                    level (Turbo) after suspend/resume
           Product: Power Management
           Version: 2.5
    Kernel Version: Linux genlap 3.12.2-gentoo #3 SMP Wed Dec 4 19:19:01
                    CET 2013 x86_64 Intel(R) Core(TM) i7-4900MQ CPU @
                    2.80GHz GenuineIntel GNU/Linux
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: cpufreq
          Assignee: cpufreq@vger.kernel.org
          Reporter: herrlado@gmail.com
        Regression: No

Created attachment 117541
  --> https://bugzilla.kernel.org/attachment.cgi?id=117541&action=edit
outpot of cpupower

After resume all the cores are showing the max turbo frequences for my cpu.
This is unrealisitc as the max frequence is 2.80 and all the cores can not run
at the max turbo frequence.

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[Bug 66581] intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

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https://bugzilla.kernel.org/show_bug.cgi?id=66581

--- Comment #1 from Lado Kumsiashvili <herrlado@gmail.com> ---
Created attachment 117551
  --> https://bugzilla.kernel.org/attachment.cgi?id=117551&action=edit
/usr/src/linux/.config

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[Bug 66581] intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

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https://bugzilla.kernel.org/show_bug.cgi?id=66581

--- Comment #2 from Lado Kumsiashvili <herrlado@gmail.com> ---
Created attachment 117561
  --> https://bugzilla.kernel.org/attachment.cgi?id=117561&action=edit
ps aux

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[Bug 66581] intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

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--- Comment #3 from Lado Kumsiashvili <herrlado@gmail.com> ---
Created attachment 117571
  --> https://bugzilla.kernel.org/attachment.cgi?id=117571&action=edit
cat /proc/cpuinfo

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[Bug 66581] intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

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https://bugzilla.kernel.org/show_bug.cgi?id=66581

Dirk Brandewie <dirk.brandewie@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dirk.brandewie@gmail.com

--- Comment #4 from Dirk Brandewie <dirk.brandewie@gmail.com> ---
Could you run "powertop --html"  before and after resume and attach the
results.

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[Bug 66581] intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

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https://bugzilla.kernel.org/show_bug.cgi?id=66581

--- Comment #5 from Lado Kumsiashvili <herrlado@gmail.com> ---
Created attachment 117671
  --> https://bugzilla.kernel.org/attachment.cgi?id=117671&action=edit
powertop --html before resume

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[Bug 66581] intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

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https://bugzilla.kernel.org/show_bug.cgi?id=66581

--- Comment #6 from Lado Kumsiashvili <herrlado@gmail.com> ---
Created attachment 117681
  --> https://bugzilla.kernel.org/attachment.cgi?id=117681&action=edit
powertop --html after resume

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[Bug 66581] intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

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https://bugzilla.kernel.org/show_bug.cgi?id=66581

--- Comment #7 from Lado Kumsiashvili <herrlado@gmail.com> ---
OK, attached. Another strange thing. I think I have never noticed before,
because I have this laptop since a couple of days. After I have booted cpufreq
showed 2.80ghz at all cores without any last. THen I have executed

max_perf_pct showed 100

and min_perf_pct showed 21

I has never gone below 2.80Ghz


After I have executed

echo 21 > /sys/devices/system/cpu/intel_pstate/max_perf_pct 

it went down to 800Mhz as expected in cpupower tool view

genlap ~ # cpupower -c 0-4 frequency-info | grep current

  current policy: frequency should be within 800 MHz and 3.80 GHz.
  current CPU frequency is 800 MHz (asserted by call to hardware).
  current policy: frequency should be within 800 MHz and 3.80 GHz.
  current CPU frequency is 800 MHz (asserted by call to hardware).
  current policy: frequency should be within 800 MHz and 3.80 GHz.
  current CPU frequency is 800 MHz (asserted by call to hardware).
  current policy: frequency should be within 800 MHz and 3.80 GHz.
  current CPU frequency is 800 MHz (asserted by call to hardware).
  current policy: frequency should be within 800 MHz and 3.80 GHz.
  current CPU frequency is 800 MHz (asserted by call to hardware).

  current CPU frequency is 800 MHz (asserted by call to hardware).

When I put the value 100 in the max_perf_pct it goes now between 2.80 and
somewhere 3.30Ghz and changes all the time as I execute cpupower. 


But, before I have touched this max_perf_pct  after the boot it was constantly
on 2.80.

With regards,

Lado

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[Bug 66581] intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

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https://bugzilla.kernel.org/show_bug.cgi?id=66581

tomasi <tomas.ivanek@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tomas.ivanek@gmail.com

--- Comment #8 from tomasi <tomas.ivanek@gmail.com> ---
Looks same like defect 65301.
https://bugzilla.kernel.org/show_bug.cgi?id=65301

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[Bug 66581] intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

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https://bugzilla.kernel.org/show_bug.cgi?id=66581

Lan Tianyu <tianyu.lan@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |zoku88@gmail.com

--- Comment #9 from Lan Tianyu <tianyu.lan@intel.com> ---
*** Bug 65301 has been marked as a duplicate of this bug. ***

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[Bug 66581] intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

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https://bugzilla.kernel.org/show_bug.cgi?id=66581

Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alan@lxorguk.ukuu.org.uk
     Kernel Version|Linux genlap 3.12.2-gentoo  |3.12.2-gentoo
                   |#3 SMP Wed Dec 4 19:19:01   |
                   |CET 2013 x86_64 Intel(R)    |
                   |Core(TM) i7-4900MQ CPU @    |
                   |2.80GHz GenuineIntel        |
                   |GNU/Linux                   |

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[Bug 66581] intel_pstate/powersave - cpu frequency remains at high level (Turbo) after suspend/resume

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https://bugzilla.kernel.org/show_bug.cgi?id=66581

Lan Tianyu <tianyu.lan@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |tianyu.lan@intel.com
           Assignee|cpufreq@vger.kernel.org     |dirk.brandewie@gmail.com

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