Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936138AbZAOWwb (ORCPT ); Thu, 15 Jan 2009 17:52:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763826AbZAOWEZ (ORCPT ); Thu, 15 Jan 2009 17:04:25 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:45671 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932754AbZAOWEW (ORCPT ); Thu, 15 Jan 2009 17:04:22 -0500 Date: Thu, 15 Jan 2009 23:03:57 +0100 From: Ingo Molnar To: Chris Mason Cc: Linus Torvalds , Matthew Wilcox , Peter Zijlstra , "Paul E. McKenney" , Gregory Haskins , Andi Kleen , Andrew Morton , Linux Kernel Mailing List , linux-fsdevel , linux-btrfs , Thomas Gleixner , Nick Piggin , Peter Morreale , Sven Dietrich , Dmitry Adamushko , Johannes Weiner Subject: Re: [GIT PULL] adaptive spinning mutexes Message-ID: <20090115220357.GB4314@elte.hu> References: <20090114183319.GA18630@elte.hu> <20090114184746.GA21334@elte.hu> <20090114192811.GA19691@elte.hu> <20090115174440.GF29283@parisc-linux.org> <20090115180844.GL22472@elte.hu> <1232047618.8269.93.camel@think.oraclecorp.com> <1232053458.8269.139.camel@think.oraclecorp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1232053458.8269.139.camel@think.oraclecorp.com> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0093] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 503 Lines: 15 * Chris Mason wrote: > [ re: pipes, ok I don't know of realistic pipe benchmarks but I'll run > them if people can suggest one ] Threaded servers making heavy use of sys_splice() ought to hit the pipe mutex all the time. Ingo -- 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/