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DateFri, 18 Sep 1998 16:37:04 +1000
FromRichard Gooch <>
SubjectRe: Interesting scheduling times
Linus Torvalds writes:
> Yes, it happened during the switch-over to a software task-switch
> routine, but the reason the numbers got worse for some people is simply
> that I screwed up the floating point save code, and it saved _every_
> time through instead of doing the lazy save it was meant to do. 
> 
> The effect of this is not huge, but it's certainly noticeable.  With
> that fixed, the software context switch is pretty comparable to the
> hardware one. 
> 
> 2.1.123 should have this context switch slowdown fixed.

I tried the patch you sent, and it makes no noticable difference on my
PPro 180 (less than 1 us).

				Regards,

					Richard....
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