Date: Wed, 13 Oct 1999 11:11:21 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: Jason Thorpe <thorpej@nas.nasa.gov> Cc: freebsd-alpha@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG Subject: Re: alpha scheduling needs some tuning Message-ID: <14340.41179.427200.433885@grasshopper.cs.duke.edu> In-Reply-To: <199910130412.VAA19287@lestat.nas.nasa.gov> References: <199910130412.VAA19287@lestat.nas.nasa.gov>
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Jason Thorpe writes:
> On Tue, 12 Oct 1999 23:37:53 -0400 (EDT)
> Andrew Gallatin <gallatin@cs.duke.edu> wrote:
>
> > Has anybody noticed that scheduling appears to be broken on the alpha?
> >
> > On both i386 & alpha, try:
> >
> > echo "main(){for(;;);}" > foo.c
> > cc foo.c
> > /usr/bin/nice -20 ./a.out & ; ./a.out &
>
> FWIW, Ross Harvey fixed a whole slew of scheduler bugs in NetBSD that
> tickled themselves on the Alpha (due to it's high statclock rate).
>
> -- Jason R. Thorpe <thorpej@nas.nasa.gov>
Jason,
Thanks for the pointer. I think I've gleaned a fix to the FreeBSD/alpha
niceness problem.
Drew
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Duke University Email: gallatin@cs.duke.edu
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