From owner-freebsd-stable@FreeBSD.ORG Thu Apr 15 00:47:40 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 0F740106566C; Thu, 15 Apr 2010 00:47:40 +0000 (UTC) (envelope-from maho.nakata@gmail.com) Received: from mail-yw0-f193.google.com (mail-yw0-f193.google.com [209.85.211.193]) by mx1.freebsd.org (Postfix) with ESMTP id 5CE158FC14; Thu, 15 Apr 2010 00:47:39 +0000 (UTC) Received: by ywh31 with SMTP id 31so386930ywh.3 for <multiple recipients>; Wed, 14 Apr 2010 17:47:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:date:message-id:to:cc :subject:from:in-reply-to:references:x-mailer:mime-version :content-type:content-transfer-encoding; bh=DYglT1HIPA3jBSLv82AkvkFFqaVIGT5lOk77sweNtys=; b=VhVcfvYoVEDQrETI4Jg1Wx4WYoGt4d4aXxxGC7Oiey7Cd/OrnIgBVGrDTrWFo1ZmhL 6aCyW4N28sRJWnFR3Or8fGoeRVZzXE7w0PsIjhHak5kZUvvhWWZExwoDuEPusB0ZuxPM 8WgYwZdyUaw7XwvB/jZSrCdROIXA9BhKymSqE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:date:message-id:to:cc:subject:from:in-reply-to:references :x-mailer:mime-version:content-type:content-transfer-encoding; b=ieI13RaGR4eWONHmCtMDc4AJ3GibqLqvNQs4/Sp5KdSkQoSvAu7HRn4fi5Qoakg8GY x2/Hd04fQqOHU0m/Y9uWBbpQQfVoEA2jQDDXxBR0Nm5+LGEY76jRCAL6nu08RlO/e8N2 Zgy1szwFJKksfqt5ywIcdFtKYqMAbb5HIq6Jk= Received: by 10.150.141.12 with SMTP id o12mr7682205ybd.189.1271292458790; Wed, 14 Apr 2010 17:47:38 -0700 (PDT) Received: from localhost (rikad42.riken.jp [134.160.214.42]) by mx.google.com with ESMTPS id 22sm243855yxe.37.2010.04.14.17.47.35 (version=SSLv3 cipher=RC4-MD5); Wed, 14 Apr 2010 17:47:37 -0700 (PDT) Sender: Maho NAKATA <maho.nakata@gmail.com> Date: Thu, 15 Apr 2010 09:47:33 +0900 (JST) Message-Id: <20100415.094733.575506241433873719.chat95@mac.com> To: amvandemore@gmail.com From: Maho NAKATA <chat95@mac.com> In-Reply-To: <m2y6201873e1004140945n855c8800we9baced2e293f270@mail.gmail.com> References: <4BC5DEB4.1090208@freebsd.org> <x2k6201873e1004140934z6f7518b9j72ffd9e1adc1ad49@mail.gmail.com> <m2y6201873e1004140945n855c8800we9baced2e293f270@mail.gmail.com> X-Mailer: Mew version 6.3 on Emacs 23.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: alc@freebsd.org, alan.l.cox@gmail.com, freebsd-stable@freebsd.org, als@modulus.org, avg@freebsd.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: Thu, 15 Apr 2010 00:47:40 -0000 opps I missed this e-mail... From: Adam Vande More <amvandemore@gmail.com> Subject: Re: How to reproduce: Re: Only 70% of theoretical peak performance on FreeBSD 8/amd64, Corei7 920 Date: Wed, 14 Apr 2010 11:45:04 -0500 > On Wed, Apr 14, 2010 at 11:34 AM, Adam Vande More <amvandemore@gmail.com>wrote: > >> >> >> >> That's about 67% utilization, turning off HTT drops it more. HTT on the >> newer cores is good, not bad. >> > > Well that was completely contrarty to some tests I'd run when I first got > the cpu. > > With HTT off: > > n: 3000 > time : 44.705516 or 11.760183 > Mflops : 45932.959253 > n: 3100 > time : 50.598581 or 14.270123 > Mflops : 41766.437458 > n: 3200 > time : 55.748192 or 15.780977 > Mflops : 41541.458400 > n: 3300 > time : 62.072217 or 17.441431 > Mflops : 41221.262070 > n: 3400 > > so that's about 79% right there. > > 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. > > -- > Adam Vande More