From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Wed, 08 Oct 2008 13:57:25 -0700 (PDT) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.12.11.20060308/8.12.11/SuSE Linux 0.7) with ESMTP id m98KvL11024595 for ; Wed, 8 Oct 2008 13:57:21 -0700 Received: from ipmail05.adl2.internode.on.net (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 975C513C233B for ; Wed, 8 Oct 2008 13:59:00 -0700 (PDT) Received: from ipmail05.adl2.internode.on.net (ipmail05.adl2.internode.on.net [203.16.214.145]) by cuda.sgi.com with ESMTP id ugcZKYASAY0EY3WC for ; Wed, 08 Oct 2008 13:59:00 -0700 (PDT) Date: Thu, 9 Oct 2008 07:58:56 +1100 From: Dave Chinner Subject: Re: xfsaild centisecs /proc wakeup control? Message-ID: <20081008205856.GE7342@disturbed> References: <48ED0DA9.7070002@tlinx.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48ED0DA9.7070002@tlinx.org> Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: "Linda A. Walsh" Cc: xfs-oss On Wed, Oct 08, 2008 at 12:44:41PM -0700, Linda A. Walsh wrote: > I was looking at powertop again recently, and noticed xfsbufd and > xfsaild at the top of the wakeup list. xfsbufd can be tuned with > /proc/sys/fs/xfs/xfsbufd_centisecs along with 3 other time-related > tunables. However, I don't see one for xfsaild. Is that an > oversight? No. The xfsaild is currently operating with watchdog functionality to catch AIL push stalls due to a know problem that this new patch: http://oss.sgi.com/archives/xfs/2008-10/msg00119.html fixes. After this has been included for a while (say a release), I plan to remove the watchdog feature of the xfsaild so the once-per-second-per-XFS-filesystem wakeup will go away then. Cheers, Dave. -- Dave Chinner david@fromorbit.com