Open
Bug 1943813
Opened 18 days ago
Updated 16 days ago
Testcase from Bug 1814711 takes 1.25x times more time on Nightly
Categories
(Core :: JavaScript Engine, task, P3)
Core
JavaScript Engine
Tracking
()
NEW
People
(Reporter: mayankleoboy1, Unassigned)
References
Details
Open the attached testcase from Bug 1814711 (https://bugzilla.mozilla.org/attachment.cgi?id=9379494)
Nightly: https://share.firefox.dev/42N0Asb (2850ms without the profiler)
Chrome: https://share.firefox.dev/3PX3C57 (2280ms without the profiler)
From bug 1814711 it sounds like performance in this testcase was important. Not sure how important it is now.
As usual, feel free to WONTFIX.
Comment 1•17 days ago
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The numbers I get today are similar to the ones in bug 1814711 comment 8 for Nightly and Safari, but Chrome is around 1900-2000 ms now so they've optimized Object.assign
since then.
This probably needs some sort of assign
cache because it will be hard to make the current fast path for plain objects a lot faster.
Updated•16 days ago
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Severity: -- → S3
Priority: -- → P3
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Description
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