From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [PATCH 02/11] writeback: switch to per-bdi threads for flushing data Date: Wed, 20 May 2009 00:11:44 +0200 Message-ID: <1242771104.26820.504.camel@twins> References: <1242649192-16263-1-git-send-email-jens.axboe@oracle.com> <1242649192-16263-3-git-send-email-jens.axboe@oracle.com> <4A1287FC.9020401@rsk.demon.co.uk> <20090519122324.GY4140@kernel.dk> <1242740758.2754.33.camel@localhost.localdomain> <20090519175646.GF4140@kernel.dk> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: Richard Kennedy , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, chris.mason@oracle.com, david@fromorbit.com, hch@infradead.org, akpm@linux-foundation.org, jack@suse.cz, yanmin_zhang@linux.intel.com To: Jens Axboe Return-path: Received: from casper.infradead.org ([85.118.1.10]:48480 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751361AbZESWLz (ORCPT ); Tue, 19 May 2009 18:11:55 -0400 In-Reply-To: <20090519175646.GF4140@kernel.dk> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Tue, 2009-05-19 at 19:56 +0200, Jens Axboe wrote: > > Balance_dirty_pages contains Peter Zijlstra's per bdi write throttling > > code and I wonder if it will need tuning for best performance with your > > changes, just because some of its assumptions may have changed. I'll run > > some tests here and see what happens. Peter may have some insight and > > possibly useful test cases. > > I'm assuming those are setting in -mm? I'll take a look. Nah, those got merged ages ago (.24 iirc) and I don't think that would need any touch ups wrt this series.