From owner-freebsd-current@FreeBSD.ORG Sun Feb 25 13:51:34 2007 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 42EC916A402; Sun, 25 Feb 2007 13:51:34 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from cyrus.watson.org (cyrus.watson.org [209.31.154.42]) by mx1.freebsd.org (Postfix) with ESMTP id 150C613C4AC; Sun, 25 Feb 2007 13:51:29 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from fledge.watson.org (fledge.watson.org [209.31.154.41]) by cyrus.watson.org (Postfix) with ESMTP id 406F347885; Sun, 25 Feb 2007 08:51:29 -0500 (EST) Date: Sun, 25 Feb 2007 13:51:29 +0000 (GMT) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: Martin Blapp In-Reply-To: <20070225134508.C18301@godot.imp.ch> Message-ID: <20070225132830.O36322@fledge.watson.org> References: <20070224213111.GB41434@xor.obsecurity.org> <346a80220702242100i7ec22b5h4b25cc7d20d03e98@mail.gmail.com> <20070225054120.GA47059@xor.obsecurity.org> <20070225104709.S36322@fledge.watson.org> <20070225134508.C18301@godot.imp.ch> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: cokane@cokane.org, smp@freebsd.org, hackers@freebsd.org, current@freebsd.org, Kris Kennaway Subject: Re: Progress on scaling of FreeBSD on 8 CPU systems X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Feb 2007 13:51:34 -0000 On Sun, 25 Feb 2007, Martin Blapp wrote: >> It would be really great if we could find "workload owners" who would >> maintain easy-to-run benchmark configurations and also run them regularly >> on a fixed hardware configuration over a long time publishing results and >> testing patches. Kris has done this for SQL benchmarks to great effect, > > I'm interested in such a workload test. At my job we run various other > servers which have a classic virus/antispam environment. And unfortunatly > clamd behaves not very well on FreeBSD (see mails to freebsd-threads), and > this happens even on 2-CPU systems. > > I think its not very difficult to make a scripted load test, with > 2/4/6/8/16/32 scans in parallel, with ULE or BSD scheduler. As long as it is realistic and reproduceable, it sounds good to me. > Btw: what is the best method to profile a threaded application to see where > it spends the most CPU time ? Try looking at system pmc support -- using system pmcs, you can profile a variety of factors (including CPU use, cache misses, etc) across the whole system (kernel and application), so it's a really neat tool. Robert N M Watson Computer Laboratory University of Cambridge