From owner-freebsd-arch Fri Sep 20 7:43:25 2002 Delivered-To: freebsd-arch@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 88DDA37B4AD for ; Fri, 20 Sep 2002 07:43:17 -0700 (PDT) Received: from mail.speakeasy.net (mail16.speakeasy.net [216.254.0.216]) by mx1.FreeBSD.org (Postfix) with ESMTP id 13E1743E88 for ; Fri, 20 Sep 2002 07:43:16 -0700 (PDT) (envelope-from jhb@FreeBSD.org) Received: (qmail 29424 invoked from network); 20 Sep 2002 14:45:00 -0000 Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) by mail16.speakeasy.net (qmail-ldap-1.03) with DES-CBC3-SHA encrypted SMTP for ; 20 Sep 2002 14:45:00 -0000 Received: from laptop.baldwin.cx (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.12.5/8.12.5) with ESMTP id g8KEhEBv069356; Fri, 20 Sep 2002 10:43:14 -0400 (EDT) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.5.2 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: Date: Fri, 20 Sep 2002 10:43:16 -0400 (EDT) From: John Baldwin To: Rik van Riel Subject: Re: New Linux threading model Cc: freebsd-arch@freebsd.org, Julian Elischer , Bill Huey Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 20-Sep-2002 Rik van Riel wrote: > On Fri, 20 Sep 2002, Bill Huey wrote: >> On Fri, Sep 20, 2002 at 12:08:38AM -0700, Julian Elischer wrote: >> > HI and thanks for the pointers. >> > >> > it's interesting that the features that they talk about >> > as being difficult and 'required' generally just "fall out" of the >> > KSE implimentation. A lot of the shortcomings of M:N that they >> > quote don't apply to the KSE schemes either.. >> >> Mingo's O(1) scheduler is pretty snazzy ( high brow technical term ;) ) >> with how it migrates/load balances tasks between various CPUs, maintains >> cache coherency, > > What's maybe more important about the O(1) scheduler is that it > doesn't try to recalculate the priority of all processes once > in a while, like the FreeBSD scheduler and the old Linux scheduler. Yes, schedcpu() needs to die die die and be replaced by a more event-driven model. :) -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message