Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753153AbZLVMj1 (ORCPT ); Tue, 22 Dec 2009 07:39:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751804AbZLVMj0 (ORCPT ); Tue, 22 Dec 2009 07:39:26 -0500 Received: from casper.infradead.org ([85.118.1.10]:33595 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751013AbZLVMjZ (ORCPT ); Tue, 22 Dec 2009 07:39:25 -0500 Subject: Re: [PATCH] improve the performance of large sequential write NFS workloads From: Peter Zijlstra To: Jan Kara Cc: Steve Rago , Wu Fengguang , "linux-nfs@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "Trond.Myklebust@netapp.com" , "jens.axboe" , Peter Staubach In-Reply-To: <20091222122557.GA604@atrey.karlin.mff.cuni.cz> References: <1261015420.1947.54.camel@serenity> <1261037877.27920.36.camel@laptop> <20091219122033.GA11360@localhost> <1261232747.1947.194.camel@serenity> <20091222122557.GA604@atrey.karlin.mff.cuni.cz> Content-Type: text/plain; charset="UTF-8" Date: Tue, 22 Dec 2009 13:38:35 +0100 Message-ID: <1261485515.4937.28.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 613 Lines: 18 On Tue, 2009-12-22 at 13:25 +0100, Jan Kara wrote: > I believe that if we had per-bdi dirty_background_ratio and set it low > for NFS's bdi, There's two things there I think: 1) bdi_background 2) different background ratios per bdi 1) could be 'trivially' done much like we do bdi_dirty in get_dirty_limits(). 2) I'm not at all convinced we want to go there. -- 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/