Messages in this thread |  | | Date | Thu, 21 Sep 2000 14:53:07 -0400 | From | David Riley <> | Subject | Re: strange BogoMIPS value |
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Erik McKee wrote: > > Hello! > > It seems as if linux 2.2.17 is calculating a strange value for my bogomips > value. I thought is was supposed to be somewhere near the processor > speed. Perhaps I am missing something? > > Have a nice day ;) > Erik >
> Detected 99547 kHz processor. ... > Calibrating delay loop... 198.25 BogoMIPS
This actually seems about right.
Keep in mind that just about any modern processor since the 486 has had parallel instruction units. Theoretically, for example, a processor with three integer units (like a PowerPC 750 or an Athlon) could execute 3 short integer instructions per CPU cycle (not quite that simple). MIPS is for the number of instructions that can be executed per second, which means that if you have a slower processor that takes several cycles to do even simple computations (say 2 cycles for an add) you might get less than your CPU speed. What you have seems to be twice your CPU speed. I'm not quite sure what the algorithm is (I never really peeked) but on my Pentium 100 I get about 200 BogoMIPS (though older kernels used to give me 40). What you have is twice your processor speed. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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