Hi Ashley, On Monday 11 January 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. >
That is not odd. This is a feature of most modern CPUs. Whenever the CPU is under minimal load, the clock speed drops down to a lower value to save power. I believe you can turn this feature on/off from the BIOS. The latest models can do this even more flexibly, AFAICR they call it dynamic overclocking (or underclocking in this case). For example my desktop at home is rated at 3.00 GHz, but I have overclocked it to 3.60 GHz. So while idling, I see 3.00 and 2.40 and while under load like compiling I see 3.00 and 3.60. > 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. > > Comments? > > A Hope this helps. -- Suvayu Open source is the future. It sets us free. -- users mailing list users@lists.fedoraproject.org To unsubscribe: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
