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 ESMTP id 799BC6B01F1 for ; Thu, 26 Aug 2010 14:10:57 -0400 (EDT) Date: Thu, 26 Aug 2010 20:10:50 +0200 From: Johannes Weiner Subject: Re: [PATCH 1/3] writeback: Account for time spent congestion_waited Message-ID: <20100826181050.GA6805@cmpxchg.org> References: <1282835656-5638-1-git-send-email-mel@csn.ul.ie> <1282835656-5638-2-git-send-email-mel@csn.ul.ie> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1282835656-5638-2-git-send-email-mel@csn.ul.ie> Sender: owner-linux-mm@kvack.org To: Mel Gorman Cc: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, Andrew Morton , Christian Ehrhardt , Wu Fengguang , Jan Kara , linux-kernel@vger.kernel.org List-ID: On Thu, Aug 26, 2010 at 04:14:14PM +0100, Mel Gorman wrote: > There is strong evidence to indicate a lot of time is being spent in > congestion_wait(), some of it unnecessarily. This patch adds a > tracepoint for congestion_wait to record when congestion_wait() occurred > and how long was spent. > > Signed-off-by: Mel Gorman Reviewed-by: Johannes Weiner -- 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