Re: [gentoo-amd64] Is /proc/cpuinfo showing the actual frequency ?

[Justin]

Thanasis schrieb:
> # uname -a
> Linux wolfdale 2.6.28-gentoo-r2 #1 SMP PREEMPT Wed Feb 18 13:53:22 EET
> 2009 x86_64 Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz GenuineIntel
> GNU/Linux
> 
> Overclocked the core 2 duo (E8400) from 3 to 4GHz using motherboard
> BIOS settings. In mswindblows I can see the overclocked frequency
> (when cpu is under load), in linux /proc/cpuinfo never shows beyond the
> stock 3GHz value.
> 
> Q: Is /proc/cpuinfo showing the actual frequency?
> 
> # cat cpuinfo
> processor     : 0
> vendor_id     : GenuineIntel
> cpu family    : 6
> model         : 23
> model name    : Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz
> stepping      : 10
> cpu MHz               : 2997.000
> cache size    : 6144 KB
> physical id   : 0
> siblings      : 2
> core id               : 0
> cpu cores     : 2
> apicid                : 0
> initial apicid        : 0
> fpu           : yes
> fpu_exception : yes
> cpuid level   : 13
> 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 syscall nx lm
> constant_tsc arch_perfmon pebs bts rep_good pni dtes64 monitor ds_cpl
> vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm tpr_shadow
> vnmi flexpriority
> bogomips      : 8099.96
> clflush size  : 64
> cache_alignment       : 64
> address sizes : 36 bits physical, 48 bits virtual
> power management:
> 
> processor     : 1
> vendor_id     : GenuineIntel
> cpu family    : 6
> model         : 23
> model name    : Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz
> stepping      : 10
> cpu MHz               : 2997.000
> cache size    : 6144 KB
> physical id   : 0
> siblings      : 2
> core id               : 1
> cpu cores     : 2
> apicid                : 1
> initial apicid        : 1
> fpu           : yes
> fpu_exception : yes
> cpuid level   : 13
> 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 syscall nx lm
> constant_tsc arch_perfmon pebs bts rep_good pni dtes64 monitor ds_cpl
> vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm tpr_shadow
> vnmi flexpriority
> bogomips      : 8099.74
> clflush size  : 64
> cache_alignment       : 64
> address sizes : 36 bits physical, 48 bits virtual
> power management:
> 
> 
Do you have frequency scaling active?

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