kernel-packages team mailing list archive

[James Hunt <1235649@xxxxxxxxxxxxxxxxxx>]

>From info provided by jibel...

Forcing a log flush (#25) doesn't resolve the high memory usage (as we'd
expect, but worth ruling out).

The state file in #24 looks sane to me; forcing a re-exec of the Session
Init does cause the memory to fall to reasonable levels. This almost
feels like a compiler bug where __attribute__ ((cleanup())) is failing
for some reason.

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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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