Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752764AbZIWJPG (ORCPT ); Wed, 23 Sep 2009 05:15:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751766AbZIWJPF (ORCPT ); Wed, 23 Sep 2009 05:15:05 -0400 Received: from ey-out-2122.google.com ([74.125.78.25]:6196 "EHLO ey-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751583AbZIWJPE (ORCPT ); Wed, 23 Sep 2009 05:15:04 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; b=nx8hsMjxkqrB0svj7koA5p8pksGYvLW+oLTxRtuOuWKUATh8gEx+vap/IDOTi4Nkpw g9tmpifAHAe/p6fTEuw8ec+ZolgJflCOeIb1/Gd8Y7MO+GxmbooXKqxKWKI3YL2Djb+c Q44VcoTYVrsJyHyqruyWgcr4jzMBIyX86/of4= MIME-Version: 1.0 In-Reply-To: References: <7863dc4c0909221409v7893bfd3o4b590d5951a233ba@mail.gmail.com> <20090922212453.GB6062@nowhere> <1253686585.7695.84.camel@twins> <20090923073253.GA18022@elte.hu> <20090923074028.GA3078@elte.hu> Date: Wed, 23 Sep 2009 10:15:07 +0100 X-Google-Sender-Auth: 2ab58a6bc9a95fe6 Message-ID: <7863dc4c0909230215u2fed3edciec84f93f24d3ae1@mail.gmail.com> Subject: Re: perf sched record hangs machine From: Chris Malley To: Cyrill Gorcunov Cc: Ingo Molnar , Peter Zijlstra , Frederic Weisbecker , linux-kernel@vger.kernel.org, Steven Rostedt Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 969 Lines: 25 2009/9/23 Cyrill Gorcunov : > > Btw, meanwhile Chris may try to pass lapic boot-option in attempt to > reenable apic via msr registers. Also (iirc) i feel we may be hiding > errors if complete noop apic would be used since i belive we need to > check out under which condition a particular operation is called and > when apic is disabled it's mean we're switched to UP mode and > inter-cpu interrupts are under suspicion too. Will take a look during > ~6 hours ;) > Hi Cyrill Heh, yes that just occurred to me as well. With the lapic boot option I can't reproduce the problem, and get a good recording every time. Don't know why the BIOS had disabled it (can't see any specific option). cheers Chris -- 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/