From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with SMTP id 719B160032A for ; Thu, 20 May 2010 08:29:23 -0400 (EDT) Date: Thu, 20 May 2010 14:29:19 +0200 From: Heinz Diehl Subject: Re: RFC: dirty_ratio back to 40% Message-ID: <20100520122919.GA3420@fancy-poultry.org> References: <4BF51B0A.1050901@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4BF51B0A.1050901@redhat.com> Sender: owner-linux-mm@kvack.org To: linux-kernel@vger.kernel.org Cc: linux-mm List-ID: On 20.05.2010, Larry Woodman wrote: > Increasing the dirty_ratio to 40% will regain the performance loss seen > in several benchmarks. Whats everyone think about this??? These are tuneable via sysctl. What I have in my /etc/sysctl.conf is vm.dirty_ratio = 4 vm.dirty_background_ratio = 2 This writes back the data more often and frequently, thus preventing the system from long stalls. Works at least for me. AMD Quadcore, 8 GB RAM. -- 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