From owner-freebsd-smp Thu Jan 10 11:11:43 2002 Delivered-To: freebsd-smp@freebsd.org Received: from pintail.mail.pas.earthlink.net (pintail.mail.pas.earthlink.net [207.217.120.122]) by hub.freebsd.org (Postfix) with ESMTP id 2FD2337B400 for ; Thu, 10 Jan 2002 11:11:40 -0800 (PST) Received: from pool0030.cvx22-bradley.dialup.earthlink.net ([209.179.198.30] helo=mindspring.com) by pintail.mail.pas.earthlink.net with esmtp (Exim 3.33 #1) id 16Okbx-0000O9-00; Thu, 10 Jan 2002 11:11:37 -0800 Message-ID: <3C3DE767.8A1EBD8B@mindspring.com> Date: Thu, 10 Jan 2002 11:11:35 -0800 From: Terry Lambert X-Mailer: Mozilla 4.7 [en]C-CCK-MCD {Sony} (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Garance A Drosihn Cc: smp@FreeBSD.ORG Subject: Re: Linux moves to per CPU run queues References: <3C3CF60B.CE5F3E6C@mindspring.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Garance A Drosihn wrote: > At 6:01 PM -0800 1/9/02, Terry Lambert wrote: > >As I have been suggesting for FreeBSD for some time, Linux has > >just moved to per CPU run queues to reduce scheduler contention > >and to improve affinity. > > > >http://www.uwsg.iu.edu/hypermail/linux/kernel/0201.0/0810.html > > Well, it's still in the testing stage, it's not like the switch > has "gone production" yet. > > It does look very interesting, and it will be good to keep track > of how well it performs as more people beat on it. There clearly > seemed to be a lot of interest for this change in the above > mailing list. There seem to be several "doubters" in the list, > so I'm sure they'll come up with several different ways to > benchmark the results. > > Always good to have a little competition in the world of ideas... Or we could look at the benchmarks published about a similar approach in Dynix, back in 1991, on a 32 CPU system, and just decide that it's the right way to do things... -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message