Bug#732383: Process jbd2 (ext4 journal) uses disk too actively while downloading the game from Steam

[Andrew Kotsyuba]

Package: steam
Version: 1.0.0.39-2
Severity: important
Tags: upstream

In some unknown way Steam forces the file system journaling process to go crazy
while downloading the game.
Iotop reports something like this when it occurs (sda4 mounted as /home):

> 1379 be/3 root        0.00 B/s   54.21 K/s  0.00 % 53.53 % [jbd2/sda4-8]

Most likely, this is a bug in the Steam related to disk write buffering.
However, it is quite possible that this occurs only with the current debian
kernel or something like that. Any other application doesn't cause such disk
activity on my system. Please tell me how to diagnose this problem.



-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.11-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=ru_UA.UTF-8, LC_CTYPE=ru_UA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages steam depends on:
ii  debconf [debconf-2.0]  1.5.52
ii  libc6                  2.17-97
ii  libgl1-mesa-dri        9.2.2-1
ii  libgl1-mesa-glx        9.2.2-1
ii  libstdc++6             4.8.2-1
ii  libx11-6               2:1.6.2-1
ii  libxau6                1:1.0.8-1
ii  libxcb1                1.9.1-3.1
ii  libxdmcp6              1:1.1.1-1
ii  multiarch-support      2.17-97
ii  xterm                  297-1

Versions of packages steam recommends:
ii  zenity  3.8.0-1

steam suggests no packages.

-- debconf information:
  steam/purge:
* steam/license:
* steam/question: I AGREE