From owner-freebsd-stable@FreeBSD.ORG Wed Jul 19 15:26:25 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9ABD016A4DE for ; Wed, 19 Jul 2006 15:26:25 +0000 (UTC) (envelope-from vinny@tellurian.com) Received: from mail1.tellurian.net (mail1.tellurian.net [216.182.1.23]) by mx1.FreeBSD.org (Postfix) with ESMTP id D944443D46 for ; Wed, 19 Jul 2006 15:26:21 +0000 (GMT) (envelope-from vinny@tellurian.com) Received: from cactus.tellurian.com (cactus.tellurian.net [216.182.1.34]) by mail1.tellurian.net ([216.182.1.23] Tellurian Networks Mail Server version 3.7c-30) with ESMTP id 443707832 for multiple; Wed, 19 Jul 2006 11:26:21 -0400 Message-Id: <7.0.1.0.2.20060719112609.0abfb010@tellurian.com> X-Mailer: QUALCOMM Windows Eudora Version 7.0.1.0 Date: Wed, 19 Jul 2006 11:26:19 -0400 To: Martin Blapp ,David Wolfskill From: Vinny Abello In-Reply-To: <20060718161104.X36995@godot.imp.ch> References: <20060718152306.X36995@godot.imp.ch> <20060718155642.H36995@godot.imp.ch> <20060718140707.GG66891@bunrab.catwhisker.org> <20060718161104.X36995@godot.imp.ch> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Authenticated-User: vinny@tellurian.com X-Ultimate-Internet-Connection: Tellurian Networks Cc: freebsd-stable@freebsd.org Subject: Re: Please confirm: top(1) cpu time broken on FreeBSD 6.1 (RELEASE/STABLE) SMP ? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Jul 2006 15:26:25 -0000 Disable hyperthreading in your BIOS. At 10:20 AM 7/18/2006, Martin Blapp wrote: >Hi, > >Ok, seems to be a HTT issue on a untuned system. > >On two boxes I get with 'sysctl -a | grep smp | grep kern.smp.cpus' >kern.smp.cpus: 4 > >Here I see CPU-IDs 0 and 2 in top. No other CPUs seem to be >used. Here I get the broken CPU usage. > >And yes, seeting hyperthreading_allowed=1 corrects the top usage. > >On two other boxes where it works I get 'sysctl -a | grep smp | grep >kern.smp.cpus' kern.smp.cpus: 2 > >Here I see CPU-ID's 0 and 1 in top. Here everything works as it should. > >Martin > >Martin Blapp, >------------------------------------------------------------------ >ImproWare AG, UNIXSP & ISP, Zurlindenstrasse 29, 4133 Pratteln, CH >Phone: +41 61 826 93 00 Fax: +41 61 826 93 01 >PGP: >PGP Fingerprint: B434 53FC C87C FE7B 0A18 B84C 8686 EF22 D300 551E >------------------------------------------------------------------ > >_______________________________________________ >freebsd-stable@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-stable >To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" Vinny Abello Network Engineer Server Management vinny@tellurian.com (973)300-9211 x 125 (973)940-6125 (Direct) PGP Key Fingerprint: 3BC5 9A48 FC78 03D3 82E0 E935 5325 FBCB 0100 977A Tellurian Networks - The Ultimate Internet Connection http://www.tellurian.com (888)TELLURIAN "Courage is resistance to fear, mastery of fear - not absence of fear" -- Mark Twain