[Webkit-unassigned] [Bug 172790] Out of memory crash with MapBox-gl-js

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=172790

--- Comment #30 from Dean Jackson <dino at apple.com> ---
@DT. I can reproduce this on the hillshade example. I note that after a lot of zooming and panning, the JS heap snapshot shows a lot of un-collected ArrayBuffers. The biggest handful are all 4MB, and don't increase in number.

However there are thousands of smaller buffers, from approx 200k to 0 that are never garbage collected. They are all marked as root objects, in that they are hanging off the window.

Using the heap profiler/snapshot, it looks like the buffers come from:

- GridIndex
- Placement.retainedQueryData
- Map.style
- image.data

and a few other places.

The same thing happens in Google Chrome - which suggests it's probably an issue in MapBox.

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