From owner-freebsd-alpha Wed Oct 13 8:12: 9 1999 Delivered-To: freebsd-alpha@freebsd.org Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1]) by hub.freebsd.org (Postfix) with ESMTP id 712C2152DA; Wed, 13 Oct 1999 08:11:56 -0700 (PDT) (envelope-from gallatin@cs.duke.edu) Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30]) by duke.cs.duke.edu (8.9.1/8.9.1) with ESMTP id LAA00717; Wed, 13 Oct 1999 11:11:52 -0400 (EDT) Received: (from gallatin@localhost) by grasshopper.cs.duke.edu (8.9.3/8.9.1) id LAA55430; Wed, 13 Oct 1999 11:11:22 -0400 (EDT) (envelope-from gallatin@cs.duke.edu) From: Andrew Gallatin MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Wed, 13 Oct 1999 11:11:21 -0400 (EDT) To: Jason Thorpe Cc: freebsd-alpha@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG Subject: Re: alpha scheduling needs some tuning In-Reply-To: <199910130412.VAA19287@lestat.nas.nasa.gov> References: <199910130412.VAA19287@lestat.nas.nasa.gov> X-Mailer: VM 6.43 under 20.4 "Emerald" XEmacs Lucid Message-ID: <14340.41179.427200.433885@grasshopper.cs.duke.edu> Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Jason Thorpe writes: > On Tue, 12 Oct 1999 23:37:53 -0400 (EDT) > Andrew Gallatin 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 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 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message