Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755246AbZI3UFo (ORCPT ); Wed, 30 Sep 2009 16:05:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755149AbZI3UFn (ORCPT ); Wed, 30 Sep 2009 16:05:43 -0400 Received: from mail.gmx.net ([213.165.64.20]:35408 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755142AbZI3UFn (ORCPT ); Wed, 30 Sep 2009 16:05:43 -0400 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX1/IFZ1p11rIHW5LV+6xAYk5KNRb3GECzVkhZgKdqq 82UJNJTM6Sjfr0 Subject: Re: IO scheduler based IO controller V10 From: Mike Galbraith To: Jens Axboe Cc: 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, torvalds@linux-foundation.org, mingo@elte.hu, riel@redhat.com In-Reply-To: <1254340730.7695.32.camel@marge.simson.net> References: <1253820332-10246-1-git-send-email-vgoyal@redhat.com> <4ABC28DE.7050809@datenparkplatz.de> <20090925202636.GC15007@redhat.com> <1253976676.7005.40.camel@marge.simson.net> <1254034500.7933.6.camel@marge.simson.net> <20090927164235.GA23126@kernel.dk> <1254340730.7695.32.camel@marge.simson.net> Content-Type: text/plain Date: Wed, 30 Sep 2009 22:05:39 +0200 Message-Id: <1254341139.7695.36.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.24.1.1 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 X-FuHaFi: 0.7 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 507 Lines: 19 > /* > + * We may have seeky queues, don't throttle up just yet. > + */ > + if (time_before(jiffies, cfqd->last_seeker + CIC_SEEK_THR)) > + return 0; > + bzzzt. Window too large, but the though is to let them overload, but not instantly. -Mike -- 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/