Bug#637573: linux-image-2.6.39-2-amd64: kswapd uses 100% cpu

To: Liang Guo <bluestonechina@gmail.com>
Cc: 637573@bugs.debian.org
Subject: Bug#637573: linux-image-2.6.39-2-amd64: kswapd uses 100% cpu
From: Sergey Zhlobo <sey5020@gmail.com>
Date: Sat, 13 Aug 2011 13:21:25 +0400
Message-id: <[🔎] CAKtBh2-fJtKHboP2jjgZeSEsgRUhFpgeKzw6bQ_ifb-GGVnGYg@mail.gmail.com>
Reply-to: Sergey Zhlobo <sey5020@gmail.com>, 637573@bugs.debian.org
In-reply-to: <[🔎] CAJwrgW4Hh8sgeFYx8UxqLFS2QHqJFAa+sUaZT_mJn-48K272HQ@mail.gmail.com>
References: <[🔎] 20110812174323.4030.78872.reportbug@lenovo> <[🔎] CAJwrgW4Hh8sgeFYx8UxqLFS2QHqJFAa+sUaZT_mJn-48K272HQ@mail.gmail.com>

2011/8/13 Liang Guo <bluestonechina@gmail.com>

> on sandy bridge ( Intel(R) Core(TM) i3-2310M )
> kswapd uses 100% CPU when there is little free memory.
> swap space not used.
>
> after the command echo 1> /proc/sys/vm/drop_kaches kswapd
> disappears.
>

I‘ve met this bug too, my cpu is i5-2410M, After upgrade kernel
to 3.0.0-1-amd64, this bug disappear.

kernel 3.0.0 has a problem with the laptop battery.
this is a known problem, discussed for example here
http://ubuntuforums.org/showthread.php?t=1822629

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- Bug#637573: linux-image-2.6.39-2-amd64: kswapd uses 100% cpu
  - From: Sergey Zhlobo <sey5020@gmail.com>

References:
- Bug#637573: linux-image-2.6.39-2-amd64: kswapd uses 100% cpu
  - From: Sergey <sey5020@gmail.com>
- Bug#637573: linux-image-2.6.39-2-amd64: kswapd uses 100% cpu
  - From: Liang Guo <bluestonechina@gmail.com>

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