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# uname -a |
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Linux wolfdale 2.6.28-gentoo-r2 #1 SMP PREEMPT Wed Feb 18 13:53:22 EET |
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2009 x86_64 Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz GenuineIntel |
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GNU/Linux |
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|
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Overclocked the core 2 duo (E8400) from 3 to 4GHz using motherboard |
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BIOS settings. In mswindblows I can see the overclocked frequency |
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(when cpu is under load), in linux /proc/cpuinfo never shows beyond the |
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stock 3GHz value. |
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|
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Q: Is /proc/cpuinfo showing the actual frequency? |
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|
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# cat cpuinfo |
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processor : 0 |
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vendor_id : GenuineIntel |
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cpu family : 6 |
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model : 23 |
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model name : Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz |
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stepping : 10 |
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cpu MHz : 2997.000 |
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cache size : 6144 KB |
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physical id : 0 |
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siblings : 2 |
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core id : 0 |
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cpu cores : 2 |
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apicid : 0 |
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initial apicid : 0 |
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fpu : yes |
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fpu_exception : yes |
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cpuid level : 13 |
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wp : yes |
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flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov |
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pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm |
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constant_tsc arch_perfmon pebs bts rep_good pni dtes64 monitor ds_cpl |
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vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm tpr_shadow |
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vnmi flexpriority |
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bogomips : 8099.96 |
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clflush size : 64 |
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cache_alignment : 64 |
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address sizes : 36 bits physical, 48 bits virtual |
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power management: |
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|
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processor : 1 |
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vendor_id : GenuineIntel |
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cpu family : 6 |
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model : 23 |
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model name : Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz |
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stepping : 10 |
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cpu MHz : 2997.000 |
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cache size : 6144 KB |
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physical id : 0 |
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siblings : 2 |
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core id : 1 |
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cpu cores : 2 |
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apicid : 1 |
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initial apicid : 1 |
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fpu : yes |
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fpu_exception : yes |
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cpuid level : 13 |
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wp : yes |
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flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov |
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pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm |
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constant_tsc arch_perfmon pebs bts rep_good pni dtes64 monitor ds_cpl |
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vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm tpr_shadow |
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vnmi flexpriority |
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bogomips : 8099.74 |
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clflush size : 64 |
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cache_alignment : 64 |
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address sizes : 36 bits physical, 48 bits virtual |
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power management: |