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[Launchpad Bug Tracker <1377869@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package ubuntu-touch-session -
0.108+14.10.20141006-0ubuntu1

---------------
ubuntu-touch-session (0.108+14.10.20141006-0ubuntu1) utopic; urgency=low

  [ Oliver Grawert ]
  * fix the oom score for the ubuntu-touch session so that the value
    lies above system processes and session processes get killed first.
    (LP: #1377869)
 -- Ubuntu daily release <ps-jenkins@xxxxxxxxxxxxxxxxxxx>   Mon, 06 Oct 2014 13:48:02 +0000

** Changed in: ubuntu-touch-session (Ubuntu RTM)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1377869

Title:
  Set a positive value to oom_score_adj for session processes

Status in “lxc-android-config” package in Ubuntu:
  Invalid
Status in “ubuntu-touch-session” package in Ubuntu:
  Fix Released
Status in “lxc-android-config” package in Ubuntu RTM:
  Invalid
Status in “ubuntu-touch-session” package in Ubuntu RTM:
  Fix Released

Bug description:
  Reference: bug 1376165

  In /etc/init/lightdm.override the oom score adjustment is set to -10.
  But system processes have an adjustment of 0 which means system
  processes will be preferred to session process in out of memory
  conditions.

  The score for session processes should be much higher.

  I tried the following test case:
  - Take a picture with camera
  - Copy it 100 times to simulate several shots with the camera.
  - Then go to the Photo scope
  - tap on "My Pictures"

  With the current setting oom killer selects system dbus or powerd which requires a hard reboot of the device.
  I tried 300 (this is an example to have a significant difference with current setting)  and OOM killer selects unity8-dash (which used 44% of the memory) and the system recovered without a reboot.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: lxc-android-config 0.207 [origin: Ubuntu RTM]
  Uname: Linux 3.4.67 armv7l
  ApportVersion: 2.14.7-0ubuntu1
  Architecture: armhf
  Date: Mon Oct  6 11:41:24 2014
  InstallationDate: Installed on 2014-09-29 (7 days ago)
  InstallationMedia: Ubuntu Utopic Unicorn (development branch) - armhf (20140929-030205)
  PackageArchitecture: all
  SourcePackage: lxc-android-config
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.init.device.hacks.conf: [modified]
  mtime.conffile..etc.init.device.hacks.conf: 2014-09-25T15:57:00
  upstart.alsa-restore.override: manual
  upstart.alsa-store.override: manual
  upstart.boot-hooks: Error: [Errno 21] Is a directory: '/etc/init/boot-hooks'
  upstart.cups.override:
   # cups - CUPS Printing spooler and server
   # socket activation overrides for touch
   start on socket PROTO=inet PORT=631 ADDR=127.0.0.1
   exec /usr/sbin/cupsd -f -x 30
  upstart.lxc-net.override: manual
  upstart.plymouth-upstart-bridge.override: manual
  upstart.setvtrgb.override: manual
  upstart.ssh.override:
   manual
   
   exec /usr/sbin/sshd -D -o PasswordAuthentication=no
  upstart.tty1.override: manual
  upstart.tty2.override: manual
  upstart.tty3.override: manual
  upstart.tty4.override: manual
  upstart.tty5.override: manual
  upstart.tty6.override: manual
  upstart.ureadahead-other.override: manual
  upstart.ureadahead.override: manual

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