From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 10 Jan 2007 15:04:15 -0800 (PST) From: Christoph Lameter Subject: Re: [REGRESSION] 2.6.19/2.6.20-rc3 buffered write slowdown In-Reply-To: <20070110223731.GC44411608@melbourne.sgi.com> Message-ID: References: <20070110223731.GC44411608@melbourne.sgi.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: David Chinner Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Thu, 11 Jan 2007, David Chinner wrote: > The performance and smoothness is fully restored on 2.6.20-rc3 > by setting dirty_ratio down to 10 (from the default 40), so > something in the VM is not working as well as it used to.... dirty_background_ratio is left as is at 10? So you gain performance by switching off background writes via pdflush? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org