Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758254AbYBSVO3 (ORCPT ); Tue, 19 Feb 2008 16:14:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753860AbYBSVOW (ORCPT ); Tue, 19 Feb 2008 16:14:22 -0500 Received: from relay2.sgi.com ([192.48.171.30]:56502 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753422AbYBSVOV (ORCPT ); Tue, 19 Feb 2008 16:14:21 -0500 Date: Tue, 19 Feb 2008 15:14:18 -0600 From: Paul Jackson To: Jens Axboe , Mike Travis Cc: Alan.Brunelle@hp.com, linux-kernel@vger.kernel.org, npiggin@suse.de, dgc@sgi.com, arjan@linux.intel.com Subject: Re: IO queueing and complete affinity w/ threads: Some results Message-Id: <20080219151418.97557f0f.pj@sgi.com> In-Reply-To: <20080218123717.GW23197@kernel.dk> References: <47B0B69B.1050807@hp.com> <47B46008.9020804@hp.com> <20080218123717.GW23197@kernel.dk> Organization: SGI X-Mailer: Sylpheed version 2.2.4 (GTK+ 2.12.0; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 757 Lines: 20 Jens wrote: > My main worry with the current code is the ->lock in the per-cpu > completion structure. Drive-by-comment here: Does the patch posted later this same day by Mike Travis: [PATCH 0/2] percpu: Optimize percpu accesses v3 help with this lock issue any? (I have no real clue here -- just connecting up the pretty colored dots ;). -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson 1.940.382.4214 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/