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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

------------------------------------------------------------------------------
Andrew Gallatin, Sr Systems Programmer	http://www.cs.duke.edu/~gallatin
Duke University				Email: gallatin@cs.duke.edu
Department of Computer Science		Phone: (919) 660-6590


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