From owner-freebsd-stable@FreeBSD.ORG Thu Apr 15 05:34:08 2010 Return-Path: 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 53C94106564A; Thu, 15 Apr 2010 05:34:08 +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 5C1E78FC19; Thu, 15 Apr 2010 05:34:06 +0000 (UTC) Received: from porto.topspin.kiev.ua (porto-e.starpoint.kiev.ua [212.40.38.100]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id IAA17690; Thu, 15 Apr 2010 08:33:50 +0300 (EEST) (envelope-from avg@freebsd.org) Received: from localhost.topspin.kiev.ua ([127.0.0.1]) by porto.topspin.kiev.ua with esmtp (Exim 4.34 (FreeBSD)) id 1O2Hi1-0004ib-N4; Thu, 15 Apr 2010 08:33:49 +0300 Message-ID: <4BC6A53D.4000400@freebsd.org> Date: Thu, 15 Apr 2010 08:33:49 +0300 From: Andriy Gapon User-Agent: Thunderbird 2.0.0.24 (X11/20100321) MIME-Version: 1.0 To: Maho NAKATA References: <20100415135034.J52200@sola.nimnet.asn.au> <20100415.132834.229420430668646074.chat95@mac.com> In-Reply-To: <20100415.132834.229420430668646074.chat95@mac.com> X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: amvandemore@gmail.com, freebsd-stable@freebsd.org, smithi@nimnet.asn.au, alc@freebsd.org, alan.l.cox@gmail.com, yanefbsd@gmail.com, als@modulus.org Subject: Re: HyperThreading makes worse to me 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: Thu, 15 Apr 2010 05:34:08 -0000 on 15/04/2010 07:28 Maho NAKATA said the following: > right. Pinning might not be so important I guess. Core i7 is not NUMA. It still should be beneficial from the point of view of core local caches. If a thread that works on the same data set (non shared) stays on the same core the chances are greater that the data stays in cache. -- Andriy Gapon