721229 - Canvas causes spiking VRAM usage leading to usability issues

Status: REOPENED

(Core :: Graphics: Canvas2D, defect)

Description

[Bas Schouten (:bas.schouten)]

There's a canvas demo at http://realcctv.blogspot.com/p/html5-sparkle.html which leads to a spike in VRAM/RAM usage and slows Firefox to a crawl, before causing severe system usability issues.

Comment 1

[Boris Zbarsky [:bzbarsky]]

There's a lot of radial-gradient creation in there....  Could that be part of the problem?

Comment 2

[Bas Schouten (:bas.schouten)]

(In reply to Boris Zbarsky (:bz) from comment #1)
> There's a lot of radial-gradient creation in there....  Could that be part
> of the problem?

It could be, we allocate textures in memory in order to draw radial gradients so it could be related, particularly if they don't get freed/garbagecollected in time.

Comment 4

[Bas Schouten (:bas.schouten)]

Duped the wrong bug.

Comment 5

[Achwaq Khalid]

Firefox with E10S enabled is using a huge amount of VRAM (assuming that HWA is enabled)this is a huge problem (battery related) for notebooks with less than 1GB of video memory

Comment 6

[Danial Horton]

Can not reproduce on Firefox 56 (with or without advanced layers)

looks resolved to me.