Re: GRR!! SMP=1 sucks

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 9 Apr 1998 23:40:30 +0100 (BST)

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> > SMP=1 isnt safe on some boxes. SMP=1 is upto 10% slower for single CPU
> > on real tasks and 40% slower on certain FPU/sleep/FPU/sleep patterns
> >
> > Alan
>
> Then perhaps this is some more pressure to reduce SMP overhead to it's
> bare minimum?

The FPU one is not simple. The FPU context can switch CPUs

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