Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753743AbZJCHZi (ORCPT ); Sat, 3 Oct 2009 03:25:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753300AbZJCHZh (ORCPT ); Sat, 3 Oct 2009 03:25:37 -0400 Received: from brick.kernel.dk ([93.163.65.50]:56154 "EHLO kernel.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753288AbZJCHZh (ORCPT ); Sat, 3 Oct 2009 03:25:37 -0400 Date: Sat, 3 Oct 2009 09:25:41 +0200 From: Jens Axboe To: Ingo Molnar Cc: Mike Galbraith , Linus Torvalds , Vivek Goyal , 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: IO scheduler based IO controller V10 Message-ID: <20091003072540.GW31616@kernel.dk> References: <20091002171129.GG31616@kernel.dk> <20091002172046.GA2376@elte.hu> <20091002172554.GJ31616@kernel.dk> <20091002172842.GA4884@elte.hu> <20091002173732.GK31616@kernel.dk> <1254507215.8667.7.camel@marge.simson.net> <20091002181903.GN31616@kernel.dk> <1254548931.8299.18.camel@marge.simson.net> <20091003072021.GB21407@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20091003072021.GB21407@elte.hu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1167 Lines: 34 On Sat, Oct 03 2009, Ingo Molnar wrote: > > * Mike Galbraith wrote: > > > unsigned int cfq_desktop; > > + unsigned int cfq_desktop_dispatch; > > > - if (cfq_cfqq_idle_window(cfqq) && cfqd->rq_in_driver[BLK_RW_ASYNC]) > > + if (cfq_cfqq_idle_window(cfqq) && cfqd->rq_in_driver[BLK_RW_ASYNC]) { > > + cfqd->desktop_dispatch_ts = jiffies; > > return 0; > > + } > > btw., i hope all those desktop_ things will be named latency_ pretty > soon as the consensus seems to be - the word 'desktop' feels so wrong in > this context. > > 'desktop' is a form of use of computers and the implication of good > latencies goes far beyond that category of systems. I will rename it, for now it doesn't matter (lets not get bogged down in bike shed colors, please). Oh and Mike, I forgot to mention this in the previous email - no more tunables, please. We'll keep this under a single knob. -- Jens Axboe -- 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/