Odd /proc/cpuinfo

[Rick Stevens]

On 01/11/2010 10:40 AM, Ashley M. Kirchner wrote:
>
>      So I never paid attention to this since I always assumed the system
> will do The Right Thing (TM), however while going through servers today,
> I came across this discrepancy and was hoping someone here could help me
> figure out what's going on.
>
>      While 'cat'ing /proc/cpuinfo I see this (other information removed):
>
>          vendor_id       : GenuineIntel
>          cpu family      : 15
>          model           : 4
>          model name      : Intel(R) Pentium(R) 4 CPU 3.40GHz
>          stepping        : 10
>          cpu MHz         : 2400.000
>          cache size      : 2048 KB
>
>      Someone please explain to me how the CPU is a 3.4GHz CPU (which I've
> verified by reading it right off of the top of the processor) and yet
> two lines down it says that it's 2400.000 MHz (or 2.4GHz)  What happened
> with the missing 1GHz?  The second CPU reports the same thing.
>
>      Is this a motherboard issue?  Possibly not configured right?  If so,
> boy do I feel stupid considering this machine has been in production for
> a long time and no one's ever noticed.

If you have cpuspeed or cpu-freq running, it will scale the speed of
the CPU based on workload.  If the machine's busy, the CPU will run
faster, if not...
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- Rick Stevens, Systems Engineer                      ricks at nerd.com -
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