Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751918Ab1B0XQ3 (ORCPT ); Sun, 27 Feb 2011 18:16:29 -0500 Received: from mx1.redhat.com ([209.132.183.28]:34361 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751794Ab1B0XQ1 (ORCPT ); Sun, 27 Feb 2011 18:16:27 -0500 Date: Sun, 27 Feb 2011 18:16:18 -0500 From: Vivek Goyal To: Gui Jianfeng Cc: Jens Axboe , Justin TerAvest , "jmoyer@redhat.com" , Chad Talbott , lkml Subject: Re: [PATCH 0/6 v5.1] cfq-iosched: Introduce CFQ group hierarchical scheduling and "use_hierarchy" interface Message-ID: <20110227231618.GA1014@redhat.com> References: <4D61FE91.60705@cn.fujitsu.com> <4D6201A3.70301@cn.fujitsu.com> <4D64788F.6040408@cn.fujitsu.com> <20110224181140.GE18494@redhat.com> <4D670C14.9040504@cn.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4D670C14.9040504@cn.fujitsu.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1547 Lines: 44 On Fri, Feb 25, 2011 at 09:55:32AM +0800, Gui Jianfeng wrote: > Vivek Goyal wrote: > > On Wed, Feb 23, 2011 at 11:01:35AM +0800, Gui Jianfeng wrote: > >> Hi > >> > >> I rebase this series on top of *for-next* branch, it will make merging life easier. > >> > >> Previously, I posted a patchset to add support of CFQ group hierarchical scheduling > >> in the way that it puts all CFQ queues in a hidden group and schedules with other > >> CFQ group under their parent. The patchset is available here, > >> http://lkml.org/lkml/2010/8/30/30 > > > > Gui, > > > > I was running some tests (iostest) with these patches and my system crashed > > after a while. > > > > To be precise I was running "brrmmap" test of iostest. > > Vivek, > > I simply run iostest with brrmmap mode, I can't reproduce this bug. > Would you give more details. > Can you tell me the iostest command line options? iostest /dev/dm-1 -G --nrgrp 4 -m 8 --cgtime --io_serviced --dequeue --total I was actually trying to run all the workloads defined but after running 2 workloads it crashed on 3rd workload. Now I tried to re-run brrmmap and it did not crash. So I am trying to run all the inbuilt workloads again. > Did you enable use_hierarchy in root group? No I did not. Trying to test the flat setup first. Thanks Vivek -- 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/