From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760173AbXGPI3c (ORCPT ); Mon, 16 Jul 2007 04:29:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754725AbXGPI3Y (ORCPT ); Mon, 16 Jul 2007 04:29:24 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:60947 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754639AbXGPI3Y (ORCPT ); Mon, 16 Jul 2007 04:29:24 -0400 Date: Mon, 16 Jul 2007 10:29:17 +0200 From: Ingo Molnar To: "Ni@m" Cc: LKML Subject: Re: performance -cfs19 vs. -ck1 for 2.6.22 Message-ID: <20070716082917.GA1325@elte.hu> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.1.7-deb -1.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Ni@m wrote: > Using 2.6.22 or 2.6.22-cfs19 my firefox hangs for some time(~4-5 > seconds) when I'm trying to open any url, but with 2.6.22-ck1 firefox > doesn't hang at all or at least for a second when I have lots of open > tabs. hm, is there no other workload on the system? Could you run the following script: http://people.redhat.com/mingo/cfs-scheduler/tools/cfs-debug-info.sh while you are busy opening new tabs on a CFSv19 kernel (and send me the file it outputs)? One way to start up the script precisely would be to start it in a terminal like this: sleep 10; echo "soon ..."; sleep 1; ./cfs-debug-info.sh that way you have 10 seconds to switch from the terminal to firefox, and you can time the delay of firefox precisely on the start-time of the debug script. Ingo