Open Bug 1867291 Opened 3 months ago Updated 3 months ago

Firefox is 1.7x slower than Chrome on an online tool and spends tons of time in Baseline (time spent in array:splice?)


(Core :: JavaScript Engine, defect, P3)





(Reporter: mayankleoboy1, Unassigned)


(Blocks 1 open bug, )


Go to
Click on the "+" button and add a large-ish image
Click on convert

Firefox : (12s in the JS part)
Chrome: (7s in the JS part)

Feel free to dupe to other "array:splice is slower in FF" bugs.

Yes it's mostly array splice time (the post write barrier and memcpy) but also some slow GetElem/SetElem property accesses.

Severity: -- → S3
Priority: -- → P3
Type: task → defect
You need to log in before you can comment on or make changes to this bug.