Messages in this thread | | | Date | Mon, 28 Sep 1998 18:11:16 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: BogoMIPS |
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On Mon, 28 Sep 1998, Richard B. Johnson wrote: > > Hmmm. It certainly helps here! It also has helped others who complained!
I did the same thing for 2.0.x a long time ago. It helped for certain chips, but it still jittered for others. And it depended on how the kernel got compiled - there was one (German?) person in particular who took the bogomips loop into user code and tried it with tons of different placements, and showed that for his CPU it made a difference how it was placed and what the surrounding code was.
As a result, 2.0.x just does it as a separate subroutine in
arch/i386/lib/delay.S
and that pretty much forces it to not jitter at all. If you'd send me that kind of patch I'd accept it.
Linus
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