Messages in this thread | | | Date | Tue, 2 Mar 2004 14:58:50 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | Re: Better performance with 2.6 |
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On Tue, 2 Mar 2004, Chris Meadors wrote:
> On Tue, 2004-03-02 at 14:10, Richard B. Johnson wrote: > > > Are you talking about BogoMips?? This is just how many twinkies > > you can eat in a second with the current coding style in the > > short timer counter. It has absolutely, positively, nothing to > > do with "CPU capacity". > > He probably meant MHz. But the same thing. What difference does a > tenth of a MHz matter? > > I do have a question about BogoMIPS. I know they don't mean anything, > but why on my Opteron system with two processors that read the same on > the cpu MHz line, do my bogomips vary so much? > > processor : 0 > cpu MHz : 1393.980 > bogomips : 2736.12 > > processor : 1 > cpu MHz : 1393.980 > bogomips : 3145.72 >
Because the loop-counter is called at different times, therefore the cache has different stuff in it.
Cheers, Dick Johnson Penguin : Linux version 2.4.24 on an i686 machine (797.90 BogoMips). Note 96.31% of all statistics are fiction.
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