upstart

  1. Bug #1235649
  2. Comment #14

Comment 14 for bug 1235649

Revision history for this message
James Hunt (jamesodhunt) wrote : Re: session upstart leaks massive amounts of memory on Ubuntu Touch

jibel - thanks. It does indeed look like bug 1234743 as the trace shows a lot of the following events:

:sys:cpu-device-online
:sys:cpu-device-offline
:sys:power_supply-device-changed

This would explain the Session consuming a lot of CPU since those events are generated by the kernel, picked up by the upstart-udev-bridge which injects them into the system init event space. These events are then noticed by the upstart-event-bridge running as phablet and injected into the Session Init with the ":sys:" prefix.

Could you run that again as "strace -fFttv -s 1024 ..." so we can see some timestamps?

Also, please attach /var/log/udev and the output of 'ls -al /proc/$session_init_pid/fd/'.

Adding kernel since as this issue only affects particular hardward, it is highly unlikely to be an Upstart issue.