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Date: Wed, 13 Apr 2011 00:37:51 +0200 From: Thomas Sattler <tsattler@....de> To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org> CC: Kelly Anderson <kelly@...ka.with-linux.com> Subject: Re: 2.6.38.x: system hangs, iowait ~75, no resource-hogs, no logs 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@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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