From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262681AbTJJAaI (ORCPT ); Thu, 9 Oct 2003 20:30:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262683AbTJJAaI (ORCPT ); Thu, 9 Oct 2003 20:30:08 -0400 Received: from node-423a141a.mdw.onnet.us.uu.net ([66.58.20.26]:35582 "EHLO topaz") by vger.kernel.org with ESMTP id S262681AbTJJAaF (ORCPT ); Thu, 9 Oct 2003 20:30:05 -0400 To: Patrick Mochel Cc: linux-kernel@vger.kernel.org Subject: Re: pmdisk performance problem References: From: Narayan Desai Date: Thu, 09 Oct 2003 19:29:52 -0500 In-Reply-To: (Patrick Mochel's message of "Thu, 9 Oct 2003 12:36:10 -0700 (PDT)") Message-ID: <877k3e9bpb.fsf@mcs.anl.gov> User-Agent: Gnus/5.1002 (Gnus v5.10.2) XEmacs/21.4 (Reasonable Discussion, linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "Pat" == Patrick Mochel writes: Pat> Do you know if this was just for the write operation, or also Pat> included stopping all processes? >> >> This was during the write of ~4600 pages to disk. Pat> Hm, that's definitely bad. Pat> Could you increase the log-level before you suspend and let me Pat> know -- by looking at the debug messages -- what seems to take Pat> the most time? >> >> sorry, but how do i do this? the particular line that takes the most time is the writing 4700 pages to disk followed by the dots. each dot takes about 10 seconds to appear on screen. I also notice that both hda and hdc are both suspended and resumed before this point. Is this intentional? -nld