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From: Thomas Sattler <tsattler@gmx.de>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: iotop: khugepaged at 99.99% (2.6.38.3)
Date: Thu, 21 Apr 2011 01:28:11 +0200	[thread overview]
Message-ID: <4DAF6C0B.3070009@gmx.de> (raw)

Hi there ...

While running firefox (>50 open Tabs), khugepaged jumped to 99.99%
(according to 'iotop').  I killed firefox and nearly all running
programs but khugepaged was still at 99.99% IO while the system
was almost idle. I waited about 10 minutes, no improvement, so
I rebooted the machine.

I observed this since 2.6.38 (I never run 2.6.37). This time the
system was still responsive. When I observed the same thing with
2.6.38.x (x<3), the system became unresponsive within minutes
after khugepaged hit 99%, see http://lkml.org/lkml/2011/4/7/306

All this happened five times since 2.6.38 became stable. It does
not happen at boot time, but days (or weeks) later.


Thomas


             reply	other threads:[~2011-04-20 23:28 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-20 23:28 Thomas Sattler [this message]
2011-04-27 13:46 ` iotop: khugepaged at 99.99% (2.6.38.3) Andrea Arcangeli
2011-05-04 12:20   ` Thomas Sattler
2011-05-04 12:37     ` Thomas Sattler
2011-05-04 14:38     ` Andrea Arcangeli
2011-05-05 13:08       ` Thomas Sattler
2011-05-05 22:04       ` iotop: khugepaged at 99.99% (2.6.38.X) Thomas Sattler
2011-05-06  1:13         ` Andrea Arcangeli
2011-05-06  6:35           ` Andrea Arcangeli
2011-05-06  8:49           ` Thomas Sattler
2011-05-06  8:54             ` Thomas Sattler
2011-05-06 14:24               ` Thomas Sattler
2011-05-06 17:20                 ` Andrea Arcangeli
2011-05-06 17:55             ` Andrea Arcangeli
2011-05-11 10:53 ` iotop: khugepaged at 99.99% (2.6.38.3) Ulrich Keller
2011-05-12 14:03   ` Andrea Arcangeli
2011-05-16  9:27     ` Ulrich Keller
2011-05-16 12:29       ` Ulrich Keller
2011-05-23 18:05     ` Johannes Hirte
2011-05-25 16:06       ` Andrea Arcangeli
2011-05-25 20:44         ` Thomas Sattler
2011-06-01 19:37     ` Gilles Hamel
2011-06-13 10:28 ` Antonio Messina
     [not found] <fa.FZDTDqnxL4JfQvyaCQTn405rzwM@ifi.uio.no>
2011-09-14 12:57 ` Slawomir Czarko-Wasiutycz
2011-09-14 13:32   ` Slawomir Czarko-Wasiutycz
2011-09-15  6:43   ` Lin Ming
2011-09-15  6:48     ` Lin Ming
2011-09-15  7:24       ` Thomas Sattler
2011-09-15  7:50         ` Lin Ming
2011-09-19 17:51     ` Andrea Arcangeli
2011-09-20 13:19       ` Slawomir Czarko-Wasiutycz

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