Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762226AbZCPWz7 (ORCPT ); Mon, 16 Mar 2009 18:55:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753013AbZCPWzt (ORCPT ); Mon, 16 Mar 2009 18:55:49 -0400 Received: from bowden.ucwb.org.au ([203.122.237.119]:42124 "EHLO mail.ucwb.org.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751363AbZCPWzs (ORCPT ); Mon, 16 Mar 2009 18:55:48 -0400 Subject: Re: [Bug #12465] KVM guests stalling on 2.6.28 (bisected) From: Kevin Shanahan To: Frederic Weisbecker Cc: Avi Kivity , "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Ingo Molnar , Mike Galbraith , Peter Zijlstra In-Reply-To: <20090316200736.GD8393@nowhere> References: <9nR7rAsBwYG.A.iEG.fOCvJB@chimera> <1237107837.27699.27.camel@kulgan.wumi.org.au> <49BE20B2.9070804@redhat.com> <1237207595.4964.31.camel@kulgan.wumi.org.au> <20090316200736.GD8393@nowhere> Content-Type: text/plain Organization: UnitingCare Wesley Bowden Date: Tue, 17 Mar 2009 09:25:37 +1030 Message-Id: <1237244137.4964.54.camel@kulgan.wumi.org.au> Mime-Version: 1.0 X-Mailer: Evolution 2.24.5 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1109 Lines: 29 On Mon, 2009-03-16 at 21:07 +0100, Frederic Weisbecker wrote: > I've looked a bit at your traces. > I think it's probably too wide to find something inside. > Latest -tip is provided with a new set of events tracing, meaning > that you will be able to produce function graph traces with various > sched events included. > > Another thing, is it possible to reproduce it with only one ping? > Or testing perioding pings and keep only one that raised a relevant > threshold of latency? I think we could do a script that can do that. > It would make the trace much clearer. Yeah, I think that should be possible. If you can come up with such a script, that would be great. > Just wait a bit, I'm looking at which event could be relevant to enable > and I come back to you with a set of commands to test. Excellent! Thanks for looking into this. Cheers, Kevin. -- 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/