1168467 - Tanx game suffers from low framerate spikes

Status: RESOLVED WORKSFORME

(Core :: Graphics: CanvasWebGL, defect)

Description

[ssimon]

Attachment: ff40_onyxia_DxDiag.txt

Actual Results:
While playing the Tanx game, occasionally the framerate will drop to unplayable levels.  It seems to be very inconsistent.

Expected Results:
Tanx game should maintain a playable framerate.

Steps to Recreate:
1 Navigate to the Tanx game using Firefox
2 Play the game for a few minutes
3 Notice the framerate spike randomly during gameplay

NOTE: In chrome, the game does not fully render.  The minimap is visible, and play names can be seen, but the background, tanks and everything else on screen does not render / is not viewable.  Tried with e10s togged on and off, did not seem to make a difference.

Comment 1

[ssimon]

Attachment: ff40_Onyxia_aboutsupport.txt

Comment 2

[Nicolas Silva [:nical]]

It would be very useful if you could collect a performance profile of the game while the issue is occurring. There are instructions here: https://developer.mozilla.org/en-US/docs/Mozilla/Performance/Profiling_with_the_Built-in_Profiler
The game runs very smoothly for me but I have a different configuration.

Comment 3

[ssimon]

(In reply to Nicolas Silva [:nical] from comment #2)
> It would be very useful if you could collect a performance profile of the
> game while the issue is occurring. There are instructions here:
> https://developer.mozilla.org/en-US/docs/Mozilla/Performance/
> Profiling_with_the_Built-in_Profiler
> The game runs very smoothly for me but I have a different configuration.

Unfortunately, after recording performance, when I click "Stop Recording" the browser crashes.  Before it crashed, I could see that the framerate dropped as low as 2.8 fps.

I attempted to record performance twice, and it crashed twice.

Here are the two crash reports: 

https://crash-stats.mozilla.com/report/index/67007cef-12f3-451e-8ca2-3d53a2150528
https://crash-stats.mozilla.com/report/index/e2854987-35e3-4d2c-98e4-b85de2150528

Comment 4

[u279076]

(In reply to ssimon from comment #3)
> https://crash-stats.mozilla.com/report/index/67007cef-12f3-451e-8ca2-
> 3d53a2150528
> https://crash-stats.mozilla.com/report/index/e2854987-35e3-4d2c-98e4-
> b85de2150528

These are both OOM crashes, specifically bug 1132499.

Comment 5

[Trammel May]

Bug no longer occurs. Game is completely playable no performance issues.

Comment 6

[Trammel May]

Note: Browser 43 was used to try to replicate