616095 - Contrasaur.us has intermittent periods of stuttering/choppiness

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Jeff Cook]

User-Agent:       Mozilla/5.0 (X11; Linux x86_64; rv:2.0b8pre) Gecko/20101201 Firefox/4.0b8pre
Build Identifier: Mozilla/5.0 (X11; Linux x86_64; rv:2.0b8pre) Gecko/20101201 Firefox/4.0b8pre

The game at http://contrasaur.us generally works well, but by the time you get to the third or fourth level, pauses occur somewhat frequently. The game will stop, sound, input, and graphics, and stutter for several seconds before resuming and playing correctly for a short time. After this time, the stutter repeats, and the game resumes, and so on until the end of the game.

My "shot-in-the-dark", useless, and likely embarrassing guess is that these are GC sweeps that pause the whole game. I guess this because the stuttering becomes more frequent as the number of objects increases, with no stuttering or almost no stuttering for the first couple of levels, and a lot of stuttering by the final levels, where there are a lot of bad guys and weapons on-screen.

Reproducible: Always

Steps to Reproduce:
1. Play the game for a while.
2. Observe the behavior described above.
Actual Results:  
Gameplay interrupted by intermittent stuttering

Expected Results:  
Smooth, uninterrupted gameplay

I am using a nightly from Dec. 1 on Linux 2.6.36 x86_64. I have a GeForce GTX 285, nvidia 260.19.21 blob drivers. Toggling layers.accelerate-all seems to have no effect.

Comment 1

[Tyler Downer [He/Him]]

This bug was reported using a pre-release version of Firefox 4. Now that Firefox 4.0.1 final has been released, can you please update and retest your bug? A fresh profile would be a good starting place to test, 
http://support.mozilla.com/kb/Managing+profiles. If you continue to see the issue, can you please update this bug with your results?

Filter: firefox4prebugsunco

Comment 2

[Wayne Mery (:wsmwk)]

If you still see this problem when using a current version, please post new information