From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756115AbZEPGwT (ORCPT ); Sat, 16 May 2009 02:52:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752074AbZEPGwJ (ORCPT ); Sat, 16 May 2009 02:52:09 -0400 Received: from wf-out-1314.google.com ([209.85.200.172]:41612 "EHLO wf-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751870AbZEPGwI (ORCPT ); Sat, 16 May 2009 02:52:08 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=rZIjCe/KWkfnR5onf4nAnhpiMnWCXbMbOPGySHOJO0wovlEmsQXGktN6IG9CEBQrac wAHQGOsyOtycXws8HQoXcquRkbaioANE5+T6mHIeNtrmnMXUfR5uHANUzcfyIUydhsA4 DKVlP4xs+VJwkQccg0Tbkfgw9y2kWqJZieBnw= MIME-Version: 1.0 In-Reply-To: <5bdc1c8b0905152037r614eaf8ft222c7a6294f2e80f@mail.gmail.com> References: <93655eb70905151007v5f9bb34aj34be4b65ffeb02a4@mail.gmail.com> <5bdc1c8b0905151012x51c19b5cv639cadab1cee3849@mail.gmail.com> <93655eb70905151024o634f8432j6c3db85df1f6ddfc@mail.gmail.com> <5bdc1c8b0905151120p5aa58318t1765544fbbb695b2@mail.gmail.com> <93655eb70905151938y558bf86flcfb7c6b6b2c171c6@mail.gmail.com> <5bdc1c8b0905151947j326d31d9k5c7b1074af2b0bf0@mail.gmail.com> <93655eb70905152012j2a40d2e0ta413a5e9dee34d46@mail.gmail.com> <5bdc1c8b0905152037r614eaf8ft222c7a6294f2e80f@mail.gmail.com> Date: Sat, 16 May 2009 12:22:09 +0530 Message-ID: <93655eb70905152352n6f82ef9dubb9b36e5be161ac7@mail.gmail.com> Subject: Re: unresponsiveness on linux desktop during file copy From: Satish Eerpini To: Mark Knecht Cc: Rik van Riel , Ray Lee , Christoph Lameter , linux-kernel Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Do you believe this was working better on an earlier kernel? If so you > might drop back and see if these commands work better. If so that > would suggest a regression of some type. I remember good performance with 2.6.26.x series, ... but I could not try that out, ,... things on a 2.6.27.23 kernel seem no better : Linux 2.6.27.23 (satish) 05/16/2009 12:11:18 PM CPU %user %nice %system %iowait %steal %idle 12:11:21 PM all 0.00 0.00 3.92 75.65 0.00 20.42 12:11:24 PM all 0.00 0.00 3.55 67.85 0.00 28.59 12:11:27 PM all 0.16 0.00 4.51 45.09 0.00 50.24 12:11:30 PM all 0.00 0.00 3.59 44.77 0.00 51.63 12:11:33 PM all 0.16 0.00 5.25 82.51 0.00 12.08 Average: all 0.06 0.00 4.17 63.24 0.00 32.53 the average disk speed was about 10.5 MB/s, indeed the average IOWAIT is more than that in the latest kernel, I will see if I can test it on a 2.6.26.x kernel or earlier one and send you guys the stats. Cheers satish -- http://satish.playdrupal.com