Re: BogoMIPS

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sat, 3 Oct 1998 23:47:27 +0100 (BST)


> > 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.

It jitters on cyrix unless you force alignments too. I've not figured out
the logic that can cause this just that it happens.

> I think the right thing is to use the TSC if the machine has one
> (which can be trusted.) That leaves only older, simple machines to
> use timing loops.

That needs the time.c patches to 2.1.x otherwise you cant use non intel
chips TSC or use the TSC on an APM aware kernel

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