[webapp-container] Video frame suddenly going blank while playing in Google+

[David Barth]

1. In the Google+ webapp, go to Jono's page, and search for his Ubuntu Phone review.
2. Play the video in landscape / fullscreen mode
3. Wait for a few minutes

The video frame suddenly goes blank.

The logs say:

[0217/200928:WARNING:message_in_transit_queue.cc(18)] Destroying nonempty message queue

[Alexandre Abreu (abreu-alexandre)]

Assuming RTM, which image version are your using? also which Oxide version?

[Dave Morley (davmor2)]

May need you to scroll roughly 3 pages into the g+ app before it dies.

[Olivier Tilloy (osomon)]

I’m seeing this on the latest vivid-proposed image (#114) on krillin. However there’s no mention of destroying a non-empty message queue in the logs.

This is what I’m seeing in the syslog:

Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334557]select 'unity8-dash' (2536), adj 50, size 14488, to kill
Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334594]select 'webapp-containe' (11843), adj 100, size 12751, to kill
Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334612]select 'oxide-renderer' (11928), adj 100, size 141176, to kill
Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334644]Killing 'oxide-renderer' (11928), adj 100,
Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334649] to free 564704kB on behalf of 'sh' (14139) because
Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334654] cache 65496kB is below limit 65536kB for oom_score_adj 12
Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334659] Free memory is -2348kB above reserved [gfp(0x200da)]

So the renderer process is being killed by the kernel because of a low memory situation. I would mark this bug a duplicate of bug #1378759.

[David Barth (dbarth)]

This could be a sudden spike in memory usage. I was tracing the processes
during video playback, and they were quite stable once the video had
started.

On Wed, Feb 18, 2015 at 9:06 AM, Olivier Tilloy <
<email address hidden>> wrote:

> I’m seeing this on the latest vivid-proposed image (#114) on krillin.
> However there’s no mention of destroying a non-empty message queue in
> the logs.
>
> This is what I’m seeing in the syslog:
>
> Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334557]select 'unity8-dash'
> (2536), adj 50, size 14488, to kill
> Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334594]select
> 'webapp-containe' (11843), adj 100, size 12751, to kill
> Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334612]select
> 'oxide-renderer' (11928), adj 100, size 141176, to kill
> Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334644]Killing
> 'oxide-renderer' (11928), adj 100,
> Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334649] to free 564704kB
> on behalf of 'sh' (14139) because
> Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334654] cache 65496kB is
> below limit 65536kB for oom_score_adj 12
> Feb 18 08:59:49 ubuntu-phablet kernel: [ 1467.334659] Free memory is
> -2348kB above reserved [gfp(0x200da)]
>
> So the renderer process is being killed by the kernel because of a low
> memory situation. I would mark this bug a duplicate of bug #1378759.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1422872
>
> Title:
> [webapp-container] Video frame suddenly going blank while playing in
> Google+
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/oxide/+bug/1422872/+subscriptions
>

[Alexandre Abreu (abreu-alexandre)]

OK, I have been able to repro the "issue", for me I could repro it after scrolling g+, starting a video (does not seem to be a requirement though since I was able to repro it w/o doing it too),

The OOM killer kills the renderer:

Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461535]select 'unity8-dash' (2619), adj 50, size 28210, to kill
Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461573]select 'webapp-containe' (23725), adj 100, size 20709, to kill
Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461590]select 'oxide-renderer' (23816), adj 100, size 138943, to kill
Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461620]Killing 'oxide-renderer' (23816), adj 100,
Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461624] to free 555772kB on behalf of 'oxide-renderer' (23816) because
Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461629] cache 61864kB is below limit 65536kB for oom_score_adj 12
Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461634] Free memory is -1316kB above reserved [gfp(0x200da)]

The webapp-container is still up & running though so in the end only the renderer dies,

[David Barth (dbarth)]

how come memory grows so much in that case, whereas it seems to play fine
when you select to play the video from a re-post ?
For example i was able to play the full video while selecting its link from
a re-post by dpm.

Can that be a bad memory leak in blink / oxide with that particular
frame/view configuration ?

On Wed, Feb 18, 2015 at 5:26 PM, Alexandre Abreu <
<email address hidden>> wrote:

> OK, I have been able to repro the "issue", for me I could repro it after
> scrolling g+, starting a video (does not seem to be a requirement though
> since I was able to repro it w/o doing it too),
>
> The OOM killer kills the renderer:
>
> Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461535]select 'unity8-dash'
> (2619), adj 50, size 28210, to kill
> Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461573]select
> 'webapp-containe' (23725), adj 100, size 20709, to kill
> Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461590]select
> 'oxide-renderer' (23816), adj 100, size 138943, to kill
> Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461620]Killing
> 'oxide-renderer' (23816), adj 100,
> Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461624] to free 555772kB
> on behalf of 'oxide-renderer' (23816) because
> Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461629] cache 61864kB is
> below limit 65536kB for oom_score_adj 12
> Feb 18 16:22:08 ubuntu-phablet kernel: [ 2794.461634] Free memory is
> -1316kB above reserved [gfp(0x200da)]
>
> The webapp-container is still up & running though so in the end only the
> renderer dies,
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1422872
>
> Title:
> [webapp-container] Video frame suddenly going blank while playing in
> Google+
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/oxide/+bug/1422872/+subscriptions
>

[Alexandre Abreu (abreu-alexandre)]

+1 for marking it as a dup of https://bugs.launchpad.net/ubuntu/+source/webbrowser-app/+bug/1378759