Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756260AbYBQUy5 (ORCPT ); Sun, 17 Feb 2008 15:54:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752893AbYBQUyt (ORCPT ); Sun, 17 Feb 2008 15:54:49 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:37563 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752867AbYBQUys (ORCPT ); Sun, 17 Feb 2008 15:54:48 -0500 Date: Sun, 17 Feb 2008 12:54:07 -0800 From: Arjan van de Ven To: allied internet ag- Stefan Priebe Cc: Christian Kujau , LKML , jirislaby@gmail.com Subject: Re: getting uninterruptible sleep processes after upgrade from 2.6.20.20 to 2.6.24.2 Message-ID: <20080217125407.5b76a052@laptopd505.fenrus.org> In-Reply-To: <47B89DC6.4070906@allied-internet.ag> References: <47B892B9.7060205@allied-internet.ag> <47B89DC6.4070906@allied-internet.ag> Organization: Intel X-Mailer: Claws Mail 3.2.0 (GTK+ 2.12.5; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1345 Lines: 33 On Sun, 17 Feb 2008 21:49:10 +0100 allied internet ag- Stefan Priebe wrote: > >> One week ago we upgraded about 300 servers from 2.6.20.20 to > >> 2.6.24.2. > > > > Painfull. > > OK not really - i've tested the new kernel on all models. And it > works fine... the DN state only comes sometimes - absolutely not > reproducable. So my tests went OK and then we've done the update. > I've now seen 5 servers in 7 days having this problem. > > >> Now we get sometimes dozent of processes in state DN. The system > >> is completely idle - but the load is 20 or 90 or whatever. And it > >> can only be "repaired" by rebooting the system. > > > > please post sysrq-t (echo t > /proc/sysrq-trigger) output. > Sorry what key is sysrq? Can i also do this via SSH Console? just do the echo above and it'll have the same effect as the key, and yes you can do this via ssh just fine (I do that all the time) -- If you want to reach me at my work email, use arjan@linux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org -- 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/