From owner-freebsd-stable@FreeBSD.ORG  Wed Apr 14 16:51:31 2010
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 7169B1065670;
	Wed, 14 Apr 2010 16:51:31 +0000 (UTC) (envelope-from avg@freebsd.org)
Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140])
	by mx1.freebsd.org (Postfix) with ESMTP id 7149B8FC1A;
	Wed, 14 Apr 2010 16:51:30 +0000 (UTC)
Received: from odyssey.starpoint.kiev.ua (alpha-e.starpoint.kiev.ua
	[212.40.38.101])
	by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id TAA02537;
	Wed, 14 Apr 2010 19:51:21 +0300 (EEST)
	(envelope-from avg@freebsd.org)
Message-ID: <4BC5F289.7020408@freebsd.org>
Date: Wed, 14 Apr 2010 19:51:21 +0300
From: Andriy Gapon <avg@freebsd.org>
User-Agent: Thunderbird 2.0.0.24 (X11/20100319)
MIME-Version: 1.0
To: Adam Vande More <amvandemore@gmail.com>
References: <h2yca3526251004122230l909bc93ey916d7fe0dd24fd33@mail.gmail.com>	
	<4BC402B7.5000400@modulus.org>	
	<v2gca3526251004122322i709c523ct4f93bcf75a778a8e@mail.gmail.com>	
	<20100414.082109.29593248145846106.chat95@mac.com>	
	<4BC5DEB4.1090208@freebsd.org>	
	<x2k6201873e1004140934z6f7518b9j72ffd9e1adc1ad49@mail.gmail.com>
	<m2y6201873e1004140945n855c8800we9baced2e293f270@mail.gmail.com>
In-Reply-To: <m2y6201873e1004140945n855c8800we9baced2e293f270@mail.gmail.com>
X-Enigmail-Version: 0.95.7
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Cc: alc@freebsd.org, Maho NAKATA <chat95@mac.com>, alan.l.cox@gmail.com,
	freebsd-stable@freebsd.org, als@modulus.org
Subject: Re: How to reproduce: Re: Only 70% of theoretical peak performance
 on 	FreeBSD 8/amd64, Corei7 920
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 14 Apr 2010 16:51:31 -0000

on 14/04/2010 19:45 Adam Vande More said the following:
> 
> also if I run cpuset on the dgemm then the utilization is basically at
> the theoretical max for one core so at least that part is working.

You can also try procstat -t <pid> to find out thread IDs and cpuset -t to pin the
threads to the cores.

-- 
Andriy Gapon