From owner-freebsd-questions@FreeBSD.ORG Tue Apr 26 04:13:14 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DCD8F16A4CE for ; Tue, 26 Apr 2005 04:13:14 +0000 (GMT) Received: from smarthost2.sentex.ca (smarthost2.sentex.ca [205.211.164.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 76F1E43D46 for ; Tue, 26 Apr 2005 04:13:14 +0000 (GMT) (envelope-from mike@sentex.net) Received: from BLUELAPIS.sentex.ca (cage.simianscience.com [64.7.134.1]) by smarthost2.sentex.ca (8.13.3/8.13.3) with SMTP id j3Q4D7mp026377; Tue, 26 Apr 2005 00:13:07 -0400 (EDT) (envelope-from mike@sentex.net) From: Mike Tancsa To: Glenn Dawson Date: Tue, 26 Apr 2005 00:13:13 -0400 Message-ID: <7pfr61tjig489o3vs2e1r6jonv48h1ps8m@4ax.com> References: <426CC4D7.2070101@cyanide-studio.com> <6.1.0.6.2.20050425174609.0edc19c0@cobalt.antimatter.net> In-Reply-To: <6.1.0.6.2.20050425174609.0edc19c0@cobalt.antimatter.net> X-Mailer: Forte Agent 1.93/32.576 English (American) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable cc: freebsd-questions@freebsd.org Subject: Re: Hyperthreading and schedulers [was Re: looking for a good sata or scsi raid 0/1 controller] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Apr 2005 04:13:15 -0000 On Mon, 25 Apr 2005 17:54:20 -0700, in sentex.lists.freebsd.questions you wrote: >At 05:33 PM 4/25/2005, Mike Tancsa wrote: >>I would start by turning off Hyperthreading as >>that only really works if you are using the ULE scheduler and thats >>broken under RELENG_5. > >I haven't noticed this mentioned before. Is using an SMP kernel on a=20 >system with a single P4 and SCHED_4BSD a waste of time? Is it=20 >detrimental? I've never noticed any problems myself, but I never went=20 >looking for any either. > See http://www.onlamp.com/pub/a/bsd/2005/01/20/smpng.html and http://lists.freebsd.org/pipermail/freebsd-stable/2003-December/005360.ht= ml to start. Also, the ULE scheduler is still broken ---Mike >-Glenn > >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to = "freebsd-questions-unsubscribe@freebsd.org" -------------------------------------------------------- Mike Tancsa, Sentex communications http://www.sentex.net Providing Internet Access since 1994 mike@sentex.net, (http://www.tancsa.com)