Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752559Ab0HZSLB (ORCPT ); Thu, 26 Aug 2010 14:11:01 -0400 Received: from f0.cmpxchg.org ([85.214.51.133]:38495 "EHLO cmpxchg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751931Ab0HZSK6 (ORCPT ); Thu, 26 Aug 2010 14:10:58 -0400 Date: Thu, 26 Aug 2010 20:10:50 +0200 From: Johannes Weiner 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 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: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 640 Lines: 14 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 from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/