linux-kernel - Re: processors core stuck in full throttle after waking up from s2ram

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Message-Id: <200811222151.49273.rjw@sisk.pl>
Date:	Sat, 22 Nov 2008 21:51:49 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"Justin P. Mattock" <justinmattock@...il.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: processors core stuck in full throttle after waking up from s2ram

On Thursday, 20 of November 2008, Justin P. Mattock wrote:
> (before getting into this I need to see if somebody else with a macbook
> pro(ATI with radeon drivers) is experiencing the same issue?)
> I'm not sure I this is caused by the kernel or the program s2ram.
> when I cat watch /proc/cpuinfo I see: (after waking up from suspend.)
> 
> Every 2.0s: cat /proc/cpuinfo
> Wed Nov 19 23:49:13 2008
> 
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 15
> model name      : Intel(R) Core(TM)2 CPU         T7400  @ 2.16GHz
> stepping        : 6
> cpu MHz         : 2167.000  
> cache size      : 4096 KB
> physical id     : 0
> siblings        : 2
> core id         : 0
> cpu cores       : 2
> apicid          : 0
> initial apicid  : 0
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> coma_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 10
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
> constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx
>  est tm2 ssse3 cx16 xtpr pdcm lahf_lm tpr_shadow
> bogomips        : 4322.49
> clflush size    : 64
> power management:
> 
> processor       : 1
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 15
> model name      : Intel(R) Core(TM)2 CPU         T7400  @ 2.16GHz
> stepping        : 6
> cpu MHz         : 1000.000
> cache size      : 4096 KB
> physical id     : 0
> siblings        : 2
> core id         : 1
> cpu cores       : 2
> apicid          : 1
> initial apicid  : 1
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> coma_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 10
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
> constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx
>  est tm2 ssse3 cx16 xtpr pdcm lahf_lm tpr_shadow
> bogomips        : 4322.60
> clflush size    : 64
> power management:
> 
> 
> the processor is full throttle on one of the cores.

Surely not.  The first core shows 2.16 GHz.

Anyway, it certainly is not related to the s2ram program in any way.

Thanks,
Rafael
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