From owner-freebsd-questions@FreeBSD.ORG Sun Mar 27 00:13:57 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 59B0A16A4CE for ; Sun, 27 Mar 2005 00:13:57 +0000 (GMT) Received: from wproxy.gmail.com (wproxy.gmail.com [64.233.184.200]) by mx1.FreeBSD.org (Postfix) with ESMTP id EF4EC43D4C for ; Sun, 27 Mar 2005 00:13:56 +0000 (GMT) (envelope-from linicks@gmail.com) Received: by wproxy.gmail.com with SMTP id 71so22892wra for ; Sat, 26 Mar 2005 16:13:56 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:references; b=L2/Y2miJvG1wOSFwbERPWlmVrS4A1aHneRxuVrS3fzt1IWlyjawhGIuZc3dThA/xZdyLB+m5Y2fO06zm3OeARm/DMOfk4wYi3OdK/o6ba0p9IzTsh8zGj95LszLWwBpQim9NZKgdPjw7txIM34M/5V3uP1ug0sYN8trL2/NdC3w= Received: by 10.54.51.64 with SMTP id y64mr902299wry; Sat, 26 Mar 2005 16:13:56 -0800 (PST) Received: by 10.54.98.3 with HTTP; Sat, 26 Mar 2005 16:13:56 -0800 (PST) Message-ID: Date: Sat, 26 Mar 2005 17:13:56 -0700 From: Nick Pavlica To: John Pettitt In-Reply-To: <4245F61E.2000300@cloudview.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit References: <1641928994.20050326192811@wanadoo.fr> <8C700529A2DFD74-A44-3A157@mblk-d34.sysops.aol.com> <439876144.20050326220638@wanadoo.fr> <8C7006AE7E80573-FAC-3B652@mblk-r28.sysops.aol.com> <49251524.20050326234521@wanadoo.fr> <20050326232753.GA64620@grover.logicsquad.net> <4245F61E.2000300@cloudview.com> cc: freebsd-questions@freebsd.org Subject: Re: hyper threading. X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Nick Pavlica List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 27 Mar 2005 00:13:57 -0000 Hello, > However even then this is not a good test of HT - the point of HT is to > improve throughput in multi thread workloads and the benchmark suite is > basically single thread. What would be more interesting would be to > run a test with a constant background load also running. In theory > the HT should do a better job of balancing the load between the > benchmark and the background than the BSD scheduler can on it's own. I > don't have an HT box here or I'd try it but I'd love to know how it > comes out if somebody is up for it. It would be interesting to see the results of the BSD & ULE scheduler on 5.4 Pre and 6 compared to 5.3R. --Nick --Nick