From owner-freebsd-current Mon Mar 25 8:40:16 2002 Delivered-To: freebsd-current@freebsd.org Received: from mail13.speakeasy.net (mail13.speakeasy.net [216.254.0.213]) by hub.freebsd.org (Postfix) with ESMTP id B2E4E37B405 for ; Mon, 25 Mar 2002 08:40:11 -0800 (PST) Received: (qmail 8320 invoked from network); 25 Mar 2002 16:40:10 -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 ; 25 Mar 2002 16:40:10 -0000 Received: from laptop.baldwin.cx (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.11.6/8.11.6) with ESMTP id g2PGeov82715; Mon, 25 Mar 2002 11:40:50 -0500 (EST) (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: <20020322204145.J88743-100000@mail.chesapeake.net> Date: Mon, 25 Mar 2002 11:40:12 -0500 (EST) From: John Baldwin To: Jeff Roberson Subject: RE: Peculiar(?) slowdown with -CURRENT as of 21 March Cc: current@freebsd.org Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 23-Mar-2002 Jeff Roberson wrote: >> >> I saw some similar weirdness in my test machines last night where a dual >> processor DS20 (Alpha 21264 500x2) beat out a PII Xeon 450x4. Normally > the >> quad xeon beats the DS20. The quad xeon was using -j16 but was about 74% >> idle. >> The DS20 had used -j8. I didn't get a chacne to run top to see how it was >> doing during hte world since I didn't notice the weirdness until last > night >> after the DS20 had finsihed but the quad xeon was still chugging along. >> > > Are you both running with WITNESS and INVARIANTS? UMA is slightly slower > with these options on than the original malloc & vm_zone code. I'm not > sure why it would be even worse for SMP machines though. So maybe it > isn't UMA at all but it's worth looking into. Yes. -- 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-current" in the body of the message