From owner-freebsd-arch@FreeBSD.ORG Tue Jan 16 21:10:23 2007 Return-Path: X-Original-To: freebsd-arch@freebsd.org Delivered-To: freebsd-arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 144DE16A596; Tue, 16 Jan 2007 21:10:23 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (66-23-211-162.clients.speedfactory.net [66.23.211.162]) by mx1.freebsd.org (Postfix) with ESMTP id 3030813C4BB; Tue, 16 Jan 2007 21:10:18 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from localhost.corp.yahoo.com (john@localhost [127.0.0.1]) (authenticated bits=0) by server.baldwin.cx (8.13.6/8.13.6) with ESMTP id l0GLA1MC047029; Tue, 16 Jan 2007 16:10:16 -0500 (EST) (envelope-from jhb@freebsd.org) From: John Baldwin To: freebsd-arch@freebsd.org Date: Tue, 16 Jan 2007 16:07:43 -0500 User-Agent: KMail/1.9.1 References: <3bbf2fe10607250813w8ff9e34pc505bf290e71758@mail.gmail.com> <3bbf2fe10701160851r79b04464m2cbdbb7f644b22b6@mail.gmail.com> <20070116154258.568e1aaf@pleiades.nextvenue.com> In-Reply-To: <20070116154258.568e1aaf@pleiades.nextvenue.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200701161607.43725.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0.2 (server.baldwin.cx [127.0.0.1]); Tue, 16 Jan 2007 16:10:16 -0500 (EST) X-Virus-Scanned: ClamAV 0.88.3/2457/Tue Jan 16 06:53:04 2007 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-4.4 required=4.2 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.1.3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on server.baldwin.cx Cc: Nick Evans , Attilio Rao Subject: Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Jan 2007 21:10:23 -0000 On Tuesday 16 January 2007 15:42, Nick Evans wrote: > On Tue, 16 Jan 2007 17:51:03 +0100 > "Attilio Rao" wrote: > > > 2006/7/28, Attilio Rao : > > > > > > After some thinking, I think it's better using init/fini methods > > > (since they hide the sizeof(struct turnstile) with size parameter). > > > > > > Feedbacks and comments are welcome: > > > http://users.gufi.org/~rookie/works/patches/uma_sync_init.diff > > > > [CC'ed all the interested people] > > > > Even if a long time is passed I did some benchmarks based on ebizzy tool. > > This program claims to reproduce a real httpd server behaviour and is > > used into the Linux world for benchmarks, AFAIK. > > I think that results of the comparison on this patch is very > > interesting, and I think it worths a commit :) > > I think that results can be even better on a Xeon machine (I had no > > chance to reproduce this on some of these). > > (Results taken in consideration have been measured after some starts, > > in order to minimize caching differences). > > > > The patch: > > http://users.gufi.org/~rookie/works/patches/ts-sq/ts-sq.diff > > > > The benchmark results: > > http://users.gufi.org/~rookie/works/patches/ts-sq/ts-sq.benchmark > > > > The kernel options file: > > http://users.gufi.org/~rookie/works/patches/ts-sq/CURRENT > > > > For any information, comment, etc. please feel free to contact me. > > > > Attilio > > > > > > -- > > Peace can only be achieved by understanding - A. Einstein > > _______________________________________________ > > freebsd-current@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-current > > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > > Some preliminary results: > > PREEMPTION: 4BSD, Quad P3-Xeon, 2GB ram > > pre-patch > > 1. 176.36 real 703.75 user 0.01 sys > 2. 176.73 real 704.34 user 0.03 sys > 3. 176.49 real 703.72 user 0.04 sys > 4. 175.81 real 701.36 user 0.03 sys > 5. 176.57 real 700.98 user 0.02 sys > > post-patch > > 1. 179.17 real 714.39 user 0.01 sys > 2. 178.33 real 711.50 user 0.04 sys > 3. 178.32 real 711.04 user 0.03 sys > 4. 177.34 real 707.51 user 0.03 sys > 5. 178.25 real 710.17 user 0.03 sys What did you use to do your benchmark? Also, have you tried adjusting UMA_ALIGN_SYNC (maybe use 64 - 1)? -- John Baldwin