From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay2.corp.sgi.com [137.38.102.29]) by oss.sgi.com (Postfix) with ESMTP id 6F88C7F61 for ; Thu, 20 Jun 2013 13:45:18 -0500 (CDT) Message-ID: <51C34DBE.1070100@sgi.com> Date: Thu, 20 Jun 2013 13:45:18 -0500 From: Mark Tinguely MIME-Version: 1.0 Subject: Re: [PATCH 03/60] xfs: plug directory buffer readahead References: <1371617468-32559-1-git-send-email-david@fromorbit.com> <1371617468-32559-4-git-send-email-david@fromorbit.com> In-Reply-To: <1371617468-32559-4-git-send-email-david@fromorbit.com> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: Dave Chinner Cc: xfs@oss.sgi.com On 06/18/13 23:50, Dave Chinner wrote: > From: Dave Chinner > > Similar to bulkstat inode chunk readahead, we need to plug directory > data buffer readahead during getdents to ensure that we can merge > adjacent readahead requests and sort out of order requests optimally > before they are dispatched. This improves the readahead efficiency > and reduces the IO load it generates as the IO patterns are > significantly better for both contiguous and fragmented directories. > > Signed-off-by: Dave Chinner > --- Looks good. Reviewed-by: Mark Tinguely _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs