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kimi2013

Member

From: OÖ/Wels

Registered: 2010-10-12

Posts: 22

[Solved]cpupower error with enabled sched-mc and sched-smt

hello,

when i enable in /etc/conf.d/cpupower : sched-mc and sched-smt systemd cant start it.

Loaded: loaded (/usr/lib/systemd/system/cpupower.service; enabled)
Active: failed (Result: exit-code) since Wed, 22 Aug 2012 16:38:11 +0200; 8s ago
Process: 19057 ExecStart=/usr/lib/systemd/scripts/cpupower (code=exited, status=1/FAILURE)
CGroup: name=systemd:/system/cpupower.service
Aug 22 16:38:11 kimi cpupower[19057]: Error setting sched-mc not supported
Aug 22 16:38:11 kimi cpupower[19057]: Error setting sched-smt not supported

when i disable both in the config everthing works perfect.

thx

kimi

sorry for my english.

Last edited by kimi2013 (2012-08-22 15:23:20)

graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,731

Website

Re: [Solved]cpupower error with enabled sched-mc and sched-smt

What don't you understand?  Clearly your CPU does not support these features.  Leave them disabled.

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AUR packages • Zsh and other configs

kimi2013

Member

From: OÖ/Wels

Registered: 2010-10-12

Posts: 22

Re: [Solved]cpupower error with enabled sched-mc and sched-smt

hm ok, but im sure that the config works a few months ago.

thx

kimi

punkeroso

Member

From: Rome, Italy

Registered: 2007-01-19

Posts: 105

Re: [Solved]cpupower error with enabled sched-mc and sched-smt

hm ok, but im sure that the config works a few months ago.

thx

kimi

Are you using the linux kernel package form testing? 3.5.x?
If so, since 3.5 is in testing, /sys/devices/system/cpu/sched_mc_power_savings and /sys/devices/system/cpu/sched_smt_power_savings are missing.
Don't ask me why....!

kimi2013

Member

From: OÖ/Wels

Registered: 2010-10-12

Posts: 22

Re: [Solved]cpupower error with enabled sched-mc and sched-smt

have the problem with both kernels - testing and stable.

btw i use a intel i3, think that both options must work.

kimi

65kid

Member

From: Germany

Registered: 2011-01-26

Posts: 663

Re: [Solved]cpupower error with enabled sched-mc and sched-smt

seems like this has indeed been removed in 3.5 (found via http://kernelnewbies.org/LinuxChanges ):

http://git.kernel.org/?p=linux/kernel/g … f58fb32759

teateawhy

Member

From: GER

Registered: 2012-03-05

Posts: 1,138

Website

Re: [Solved]cpupower error with enabled sched-mc and sched-smt

Will cpupower still work as a decent cpufreq replacement?

65kid

Member

From: Germany

Registered: 2011-01-26

Posts: 663

Re: [Solved]cpupower error with enabled sched-mc and sched-smt

Will cpupower still work as a decent cpufreq replacement?

as far as I can see, this has nothing to do with this. The feature has been removed from the kernel because it was buggy, neither cpupower nor cpufrequtils can use it.

teateawhy

Member

From: GER

Registered: 2012-03-05

Posts: 1,138

Website

Re: [Solved]cpupower error with enabled sched-mc and sched-smt

Thank you for the explanation.

Unia

Member

From: Stockholm, Sweden

Registered: 2010-03-30

Posts: 2,486

Website

Re: [Solved]cpupower error with enabled sched-mc and sched-smt

I have one question on this, hope you don't consider this bringing up a dead topic (it's not that old yet)

So, the whole sched_smt_power_savings feature has been removed in kernel 3.5? That is, there's no way to set it anymore?

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If you can't sit by a cozy fire with your code in hand enjoying its simplicity and clarity, it needs more work. --Carlos Torres

bwat47

Member

Registered: 2009-10-07

Posts: 638

Re: [Solved]cpupower error with enabled sched-mc and sched-smt

I have one question on this, hope you don't consider this bringing up a dead topic (it's not that old yet)

So, the whole sched_smt_power_savings feature has been removed in kernel 3.5? That is, there's no way to set it anymore?

apparently, I was trying to set this earlier in my powersaving script, only to find its been removed. I couldn't find any way to get it to work