Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752233Ab1DLWhz (ORCPT ); Tue, 12 Apr 2011 18:37:55 -0400 Received: from mailout-de.gmx.net ([213.165.64.23]:38628 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751492Ab1DLWhy (ORCPT ); Tue, 12 Apr 2011 18:37:54 -0400 X-Authenticated: #1474915 X-Provags-ID: V01U2FsdGVkX1+tl6IVHzmtO+eMuUtCHIE3/M9P8OQXrYmv69Yxf0 ieU6TlhgPqaWO4 Message-ID: <4DA4D43F.1080205@gmx.de> Date: Wed, 13 Apr 2011 00:37:51 +0200 From: Thomas Sattler User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9 MIME-Version: 1.0 To: Linux Kernel Mailing List CC: Kelly Anderson Subject: Re: 2.6.38.x: system hangs, iowait ~75, no resource-hogs, no logs References: <4D9E38CD.2000006@gmx.de> <4D9E4546.3090407@silka.with-linux.com> In-Reply-To: <4D9E4546.3090407@silka.with-linux.com> X-Enigmail-Version: 1.1.1 Content-Type: text/plain; charset=ISO-8859-15 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: 1381 Lines: 39 On 04/08/11 01:14, Kelly Anderson wrote: > Try the patch found in "Linux 2.6.38 freeze because of > sound/core/pcm_lib.c commit" I applied https://lkml.org/lkml/diff/2011/4/1/69/1 but that did not (completely?) solve my problem: While running firefox (>50 open Tabs), khugepaged suddenly run at 99.99% IO (according to 'iotop'). X became unusable within seconds, but the system itself was still running. I was able to switch to tty1 where everything was quite normal, except khugepaged beeing constantly above 90%. Switching back to X showed a frozen windowmanager with empty windows. Back to tty1 I was able to kill X and start a new X session, which behaved as usual. khugepaged kept the system busy for another 10min so I rebooted the machine. (This time there was no problem running 'pkill' and 'iotop' several times.) My current kernel is configured like this: $ zgrep HUGE /proc/config.gz CONFIG_TRANSPARENT_HUGEPAGE=y CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y # CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set # CONFIG_HUGETLBFS is not set # CONFIG_HUGETLB_PAGE is not set ** Please CC: me, as I'm not on the list. ** Thomas -- 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/