From owner-freebsd-alpha Wed Sep 4 7: 1:20 2002 Delivered-To: freebsd-alpha@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 03FA437B400 for ; Wed, 4 Sep 2002 07:01:17 -0700 (PDT) Received: from mail.speakeasy.net (mail13.speakeasy.net [216.254.0.213]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9522943E65 for ; Wed, 4 Sep 2002 07:01:16 -0700 (PDT) (envelope-from jhb@FreeBSD.org) Received: (qmail 2138 invoked from network); 4 Sep 2002 14:01:15 -0000 Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) by mail13.speakeasy.net (qmail-ldap-1.03) with DES-CBC3-SHA encrypted SMTP for ; 4 Sep 2002 14:01:15 -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 g84E1EBv007664; Wed, 4 Sep 2002 10:01:14 -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: <15734.3540.941843.110159@grasshopper.cs.duke.edu> Date: Wed, 04 Sep 2002 10:01:14 -0400 (EDT) From: John Baldwin To: Andrew Gallatin Subject: Re: FYI: Buffer cache fix gave major speedup Cc: peter@FreeBSD.ORG, alpha@FreeBSD.ORG Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On 04-Sep-2002 Andrew Gallatin wrote: > > John Baldwin writes: > > On the DS20 I have here, Peter's fix to basically enable the buffer cache > > gave me about a 38% performance increase for a buildworld -j 2 on current: > > > > Before: > > -------------------------------------- > > build started at 15:11:08 on 08/28/02 > > build finished at 18:43:05 on 08/28/02 > > -------------------------------------- > > Which is a total time of 3:31:57 > > > > After: > > -------------------------------------- > > build started at 22:41:31 on 09/03/02 > > build finished at 00:51:46 on 09/04/02 > > -------------------------------------- > > Which is a total time of 2:10:15 > > > > If this bug exists in 4.x we should really fix it there as well. > > > > Are you talking about btoc()? I think stable is immune. A simple > test shows the buffer cache is working just fine there. Ah, right. -- 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-alpha" in the body of the message