Re: GRR!! SMP=1 sucks

Gerhard Mack (gmack@imag.net)
Thu, 9 Apr 1998 13:04:09 -0700 (PDT)

On Thu, 9 Apr 1998, Alan Cox wrote:

> > I think that SMP=1 should be the default because eventually
> > we may want SMP=1 to be the only kind of kernel so that we can have
> > fully preemptable kernel threads, which in turn will allow every
>
> 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

Would it be logical to test for things that would cause problems on smp
boxes when compiled for up? (ughs etc)

Gerhard

--
Gerhard Mack
irc admin centurion.starchat.net


gmack@imag.net
innerfire@starchat.net


As a computer I find your faith in technology amusing. 






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