Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755809AbZJCRrd (ORCPT ); Sat, 3 Oct 2009 13:47:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755389AbZJCRrc (ORCPT ); Sat, 3 Oct 2009 13:47:32 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:55794 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754961AbZJCRrc (ORCPT ); Sat, 3 Oct 2009 13:47:32 -0400 Date: Sat, 3 Oct 2009 10:45:43 -0700 (PDT) From: Linus Torvalds X-X-Sender: torvalds@localhost.localdomain To: Jens Axboe cc: Mike Galbraith , Vivek Goyal , Ingo Molnar , Ulrich Lukas , linux-kernel@vger.kernel.org, containers@lists.linux-foundation.org, dm-devel@redhat.com, nauman@google.com, dpshah@google.com, lizf@cn.fujitsu.com, mikew@google.com, fchecconi@gmail.com, paolo.valente@unimore.it, ryov@valinux.co.jp, fernando@oss.ntt.co.jp, jmoyer@redhat.com, dhaval@linux.vnet.ibm.com, balbir@linux.vnet.ibm.com, righi.andrea@gmail.com, m-ikeda@ds.jp.nec.com, agk@redhat.com, akpm@linux-foundation.org, peterz@infradead.org, jmarchan@redhat.com, riel@redhat.com Subject: Re: Do not overload dispatch queue (Was: Re: IO scheduler based IO controller V10) In-Reply-To: <20091003173532.GG31616@kernel.dk> Message-ID: References: <1254549378.8299.21.camel@marge.simson.net> <20091003112915.GA12925@redhat.com> <20091003124049.GB12925@redhat.com> <20091003132115.GB31616@kernel.dk> <20091003135623.GD12925@redhat.com> <1254578553.7499.5.camel@marge.simson.net> <20091003142840.GE31616@kernel.dk> <1254581496.8293.8.camel@marge.simson.net> <20091003151445.GF31616@kernel.dk> <1254585420.7539.2.camel@marge.simson.net> <20091003173532.GG31616@kernel.dk> User-Agent: Alpine 2.01 (LFD 1184 2008-12-16) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 984 Lines: 29 On Sat, 3 Oct 2009, Jens Axboe wrote: > > Doesn't look too bad, all things considered. Apart from "stock" cfq, > it's consistent. And being consistent is a Good Thing. Performance wise, > it's losing out to "stock" but looks pretty competetive otherwise. I agree. And I think the numbers for the kconsole test are pretty conclusive. That's a big improvement (on top of the already very impressive improvement). > So far that looks like a winner. The dictator wanted good latency, he's > getting good latency. I'll continue working on this on monday, while I'm > waiting for delivery of the Trabant. Trabant? As in the car? Why would you _ever_ wait for delivery? The sane option would be to try to hide, or run away? Linus -- 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/