Messages in this thread | | | Date | Tue, 22 Nov 2011 09:19:54 +0100 (CET) | From | "Nicolas Kalkhof" <> | Subject | Re: [REGRESSION] sudden cpu hogging in kernel 3.2 rc-series |
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Hi Mike,
thanks for your reply! I didn't set any polling explicitly.
My boot params are: intel_iommu=off pcie_aspm=force i915.powersave=1 i915.i915_enable_rc6=1
and in the cpufrequtils startup daemon the only parameter set is: # Options when starting cpufreq (given to the `cpufreq-set` program) START_OPTS="--governor ondemand"
egrep "IDLE|GOV" .config yields:
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y CONFIG_ARCH_HAS_DEFAULT_IDLE=y # CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y # CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set CONFIG_CPU_FREQ_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_POWERSAVE=y CONFIG_CPU_FREQ_GOV_USERSPACE=y CONFIG_CPU_FREQ_GOV_ONDEMAND=y CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y CONFIG_CPU_IDLE=y CONFIG_CPU_IDLE_GOV_LADDER=y CONFIG_INTEL_IDLE=y # CONFIG_I7300_IDLE is not set
Any advice?
Thanks and Regards Nic
-----Ursprüngliche Nachricht----- Von: "Mike Galbraith" <efault@gmx.de> Gesendet: Nov 22, 2011 6:03:03 AM An: "Nicolas Kalkhof" <nkalkhof@web.de> Betreff: Re: [REGRESSION] sudden cpu hogging in kernel 3.2 rc-series
>On Mon, 2011-11-21 at 22:40 +0100, Nicolas Kalkhof wrote: >> This happens on my machine after some minutes, too when running X and >> the trinity desktop. the cpu continuously uses up additional ~10 watts >> comparing to older 3.1 kernels. The issue remains high even after I >> kill X. A closer investigation shows that poll_idle uses up the cpu >> (see dump below). Is it normal for poll_idle to use up all ressources? > >poll_idle should not consume cycles on i7 unless you booted idle=poll, >or miss-configured the kernel. > >egrep 'IDLE|GOV' .config > >CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y >CONFIG_ARCH_HAS_DEFAULT_IDLE=y >CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y ># CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set ># CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set ># CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set >CONFIG_CPU_FREQ_GOV_PERFORMANCE=y >CONFIG_CPU_FREQ_GOV_POWERSAVE=m >CONFIG_CPU_FREQ_GOV_USERSPACE=m >CONFIG_CPU_FREQ_GOV_ONDEMAND=m >CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m >CONFIG_CPU_IDLE=y >CONFIG_CPU_IDLE_GOV_LADDER=y >CONFIG_CPU_IDLE_GOV_MENU=y >CONFIG_INTEL_IDLE=y >CONFIG_I7300_IDLE_IOAT_CHANNEL=y >CONFIG_I7300_IDLE=m >CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=y >CONFIG_DEVFREQ_GOV_PERFORMANCE=y >CONFIG_DEVFREQ_GOV_POWERSAVE=y >CONFIG_DEVFREQ_GOV_USERSPACE=y > >
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