Closed Bug 1817412 Opened 3 years ago Closed 3 years ago

JS demo (https://www.fxhash.xyz/generative/19944) spends large portion of top functions in non-ion path

Categories

(Core :: JavaScript Engine, task)

Product:
Core
Component:
JavaScript Engine
Type:
task

Tracking

()

Status:
RESOLVED WONTFIX

People

(Reporter: mayankleoboy1, Unassigned)

References

(Blocks 1 open bug,
URL
)

Details

Slightly different profile with hte "high" rendering setting within the demo : https://share.firefox.dev/3EilGl4

Summary: JS demo (https://www.fxhash.xyz/generative/19944) spends large portion of top functions in noon-ion path → JS demo (https://www.fxhash.xyz/generative/19944) spends large portion of top functions in non-ion path

Looking at the flame graph it's spending most of the time doing name lookups on with environments. JS code really shouldn't be using with statements anymore; it's even marked deprecated on MDN.

Status: NEW → RESOLVED
Closed: 3 years ago
Resolution: --- → WONTFIX

Thanks :jandem for the explanation. I figured that the page must be doing something weird because of all that time in Baseline.

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