Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753015AbZIIMcg (ORCPT ); Wed, 9 Sep 2009 08:32:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752145AbZIIMce (ORCPT ); Wed, 9 Sep 2009 08:32:34 -0400 Received: from mga14.intel.com ([143.182.124.37]:32543 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752100AbZIIMcd (ORCPT ); Wed, 9 Sep 2009 08:32:33 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.44,271,1249282800"; d="scan'208";a="185674625" Date: Wed, 9 Sep 2009 20:32:23 +0800 From: Wu Fengguang To: Christoph Hellwig Cc: Chris Mason , Peter Zijlstra , Artem Bityutskiy , Jens Axboe , "linux-kernel@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "david@fromorbit.com" , "akpm@linux-foundation.org" , "jack@suse.cz" , "Theodore Ts'o" Subject: Re: [PATCH 8/8] vm: Add an tuning knob for vm.max_writeback_mb Message-ID: <20090909123223.GB23006@localhost> References: <1252401791-22463-1-git-send-email-jens.axboe@oracle.com> <1252401791-22463-9-git-send-email-jens.axboe@oracle.com> <4AA633FD.3080006@gmail.com> <1252425983.7746.120.camel@twins> <20090908162936.GA2975@think> <20090909092901.GA24185@localhost> <20090909122805.GA30238@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090909122805.GA30238@infradead.org> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 877 Lines: 21 On Wed, Sep 09, 2009 at 08:28:06PM +0800, Christoph Hellwig wrote: > On Wed, Sep 09, 2009 at 05:29:01PM +0800, Wu Fengguang wrote: > > It seems that balance_dirty_pages() is not coupled with MAX_WRITEBACK_PAGES. > > Instead it uses the much smaller (ratelimit_pages + ratelimit_pages / 2). > > With Jen's writeback patches applied balance_dirty_pages does not start > writeback itself anymore but calls bdi_start_writeback to let the > flusher thread do it. > > it would be good if we do any writeback tuning ontop of these patches.. Ah OK. I'm using latest linux-next and expected his patches to be there.. Thanks, Fengguang -- 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/