touch-packages team mailing list archive

[Pawel Stolowski <1470750@xxxxxxxxxxxxxxxxxx>]

Ok, I was able to reproduce by applying all available updates on top of
image 55.

Never mind the question about logs, nothing unusual there. Some of the
updates are for scopes and the logs show that they are uninstalled and
the installed again, e.g.

[2015-07-02 14:54:53.960533] INFO: Registry: ScopesWatcher: scope: "com.canonical.scopes.bbc_bbc" uninstalled from: "/home/phablet/.local/share/unity-scopes//com.canonical.scopes.bbc_bbc_1.8.3"
[2015-07-02 14:54:53.982678] INFO: Registry: ScopesWatcher: scope: "com.canonical.scopes.bbc_bbc" installed to: "/home/phablet/.local/share/unity-scopes//com.canonical.scopes.bbc_bbc_1.8.4"

I collected backtrace of all threads, unfortunately the overlay ppa
doesn't offer packages with debug symbols... I'll try to rebuild a
version with symbols on my phone.

After reproducing it, scope-registry keeps consuming around 50% of the
cpu but apart from that it seems to be working correctly (scopes are
started on demand and they work).

** Attachment added: "Backtrace of all treads (without symbols)"
   https://bugs.launchpad.net/canonical-devices-system-image/+bug/1470750/+attachment/4423483/+files/threads

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https://bugs.launchpad.net/bugs/1470750

Title:
  scoperegistry uses 45% CPU after applying updates from the store,
  draining battery quickly

Status in the base for Ubuntu mobile products:
  Confirmed
Status in unity-scopes-api package in Ubuntu:
  New

Bug description:
  current build number: 44
  device name: arale
  channel: ubuntu-touch/rc-proposed/meizu.en
  last update: 2015-07-02 07:10:44
  version version: 44
  version ubuntu: 20150702
  version device: 20150608-6e66f3c
  version custom: 20150602-731-5-32

  Suddenly this morning, the battery started discharging very quickly,
  'top' revealed that scoperegistry was using around 45% CPU steadily.

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
   2207 phablet   20   0  377996   9576   6200 S  46,0  0,5  67:34.54 scoperegistry

  Around the same time that the battery started dropping, I applied all the updates from the store, in the list of apps to update were:
  - Terminal
  - BBC Sport
  - BBC
  - Euronews
  - Engadget
  - Cnet

  I pressed 'Update all' and waited until it's done then closed system-
  settings.

  There is no crash file corresponding to this event.

  I reproduced it on ubuntu-touch/rc-proposed/bq-aquaris.en/krillin #55

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