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[James Hunt <1235649@xxxxxxxxxxxxxxxxxx>]

Apparently, the high cpu load stop when the upstart-event-bridge is
stopped. This lends weight to the high cpu issue being caused the a
kernel udev event issue (like bug 1234743).

However, what is not explained is why the Session Init retains the
memory it consumes once the upstart-event-bridge is stopped.


Please would someone check to see if the issue is recreatable on grouper?

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https://bugs.launchpad.net/bugs/1235649

Title:
  session upstart leaks massive amounts of memory on Ubuntu Touch

Status in “linux” package in Ubuntu:
  Confirmed
Status in “upstart” package in Ubuntu:
  Confirmed
Status in “linux” source package in Saucy:
  Confirmed
Status in “upstart” source package in Saucy:
  Confirmed

Bug description:
  using ubuntu touch image 82 i see the session init consume about 10MB per minute as long as the screen is on  with Mir.
  running the same session with surfaceflinger only consumes 1MB per minute.

  in both cases the system starts to swap heavily at some point, making
  the UI unresponsive.

  http://paste.ubuntu.com/6196223/ has the top output of a Mir session
  after 30min, the UI just got completely unresponsive when this
  snapshot was taken.

  http://paste.ubuntu.com/6196332/ is the top output of a surfaceflinger
  session where the screen was off for about 10min

  apparently the leak only occurs while the screen is on, it seems to be
  permanently there but in the case of surfaceflinger it hits less hard.

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