From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751233AbVIGQKe (ORCPT ); Wed, 7 Sep 2005 12:10:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751229AbVIGQKe (ORCPT ); Wed, 7 Sep 2005 12:10:34 -0400 Received: from palrel10.hp.com ([156.153.255.245]:34988 "EHLO palrel10.hp.com") by vger.kernel.org with ESMTP id S932155AbVIGQKd (ORCPT ); Wed, 7 Sep 2005 12:10:33 -0400 Date: Wed, 7 Sep 2005 09:14:23 -0700 From: Grant Grundler To: Coywolf Qi Hunt Cc: "Chen, Kenneth W" , Linux Kernel , linux-ia64@vger.kernel.org, Andrew Morton Subject: Re: Prefetch kernel stacks to speed up context switch Message-ID: <20050907161423.GA30660@esmail.cup.hp.com> References: <200509070829.j878TSg25898@unix-os.sc.intel.com> <2cd57c900509070152518fac06@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2cd57c900509070152518fac06@mail.gmail.com> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 07, 2005 at 04:52:17PM +0800, Coywolf Qi Hunt wrote: > On 9/7/05, Chen, Kenneth W wrote: > > Repost previously discussed patch (on Jul 27, 2005). For reference: http://www.gelato.unsw.edu.au/archives/linux-ia64/0507/14686.html > Do you have any benchmarks? Have you read the discussion? See: http://www.gelato.unsw.edu.au/archives/linux-ia64/0507/14685.html Ken didn't post any benchmark results originally but clearly stated the cacheline misses were occurring enough to be measurable. Just knowing which workload and how much much time was spent stalling for cacheline misses should be sufficient. grant