Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755863Ab1BJErR (ORCPT ); Wed, 9 Feb 2011 23:47:17 -0500 Received: from mailout-de.gmx.net ([213.165.64.22]:38624 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755585Ab1BJErQ (ORCPT ); Wed, 9 Feb 2011 23:47:16 -0500 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX18xI3gmWQUxN6cf8zwRTgaI26geVQHfYAZO+fLtYf FM2cmAjRuWvNkc Subject: Re: [BUG] soft lockup while booting machine with more than 700 cores From: Mike Galbraith To: raz ben yehuda Cc: linux-kernel@vger.kernel.org, mingo@redhat.com In-Reply-To: <1297236453.2756.9.camel@raz.scalemp.com> References: <1297236453.2756.9.camel@raz.scalemp.com> Content-Type: text/plain; charset="UTF-8" Date: Thu, 10 Feb 2011 05:47:12 +0100 Message-ID: <1297313232.7996.33.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.30.1.2 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 785 Lines: 23 On Wed, 2011-02-09 at 09:27 +0200, raz ben yehuda wrote: > Mingo Hello > > Bellow is a boot of a 2.6.32.19 kernel over a machine with more than 700 cores. A couple comments. 1. A lot of scheduler fixes were backported since then, so trying the latest .32 stable kernel is worth investigating. 2. Nasty thing with huge boxen is that they can get into big trouble with the rt throttle during boot. You might try defaulting that thing to off until booted. Dunno if this box is big enough to hit that, 2048 cores definitely is. -Mike -- 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/