Open Bug 1735591 Opened 3 years ago Updated 2 years ago

Large GC slice budget overruns in hydration-preact benchmark (found from BHR)

Categories

(Core :: JavaScript: GC, defect, P2)

Product:
Core
Component:
JavaScript: GC
Type:
defect

Tracking

()

People

(Reporter: sfink, Unassigned)

References

(Blocks 1 open bug)

Details

https://profiler.firefox.com/public/g10v910267eev83h58pkxbdnrtxq15x62kp4xrg/marker-chart/?globalTrackOrder=70w6&hiddenGlobalTracks=1w4&hiddenLocalTracksByPid=10896-12&localTrackOrderByPid=14860-120~28376-0~30304-0~28188-0~6624-0~10896-30w2~13012-01&thread=a&timelineType=cpu-category&v=6

Bas sent me this profile that he spotted on BHR. It shows lots of GC/CC time generally, but more specifically there are some very large budget overruns. In looking at a 226ms slice with a budget of 83ms, and a 98.9ms slice with a budget of 5ms, both appear to be running into nonincremental weakmap marking (bug 1667913).

So I'll try turning that on again.

Depends on: 1667913
Severity: -- → S3
Priority: -- → P2
You need to log in before you can comment on or make changes to this bug.