Open Bug 1811985 Opened 1 year ago Updated 1 year ago

JS demo ( is quite slower in Nightly compared to Chrome


(Core :: JavaScript Engine, task, P3)





(Reporter: mayankleoboy1, Unassigned)


(Depends on 2 open bugs, Blocks 1 open bug, )


Go to (The exact hash i profiled on was

Click on "open"

Nightly: (relevant portion is the large 10second period near the beginning of the profile)

Chrome: (Finishes in ~1 second)

Flame graph shows a ton of jemalloc time due to lock contention.

Depends on: 1809610, 1810953
See Also: → 1805644
Severity: -- → S4
Priority: -- → P3

Bug 1609478 reduced the time from 10s -> 8s

Bug 1827258 part 4 improved this testcase from 8 seconds to 5 .5 seconds.

Since the time I filed this bug, the time has reduced by 50% :10s ->5s . Profile:

Depends on: 1827258, 1609478
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