Open
Bug 2019566
Opened 11 days ago
Updated 11 days ago
Testcase creating N empty textnodes and then appending them in bulk is 60x slower in Firefox (looking up prev sibling from MaybeInvalidateForAppend)
Categories
(Core :: Layout, defect, P3)
Core
Layout
Tracking
()
NEW
People
(Reporter: emilio, Unassigned)
References
(Blocks 1 open bug)
Details
This is the "batched" version of bug 2013749
Open testcase
Click on Go
Firefox: https://share.firefox.dev/4t9dmM2 (3s)
Chrome: https://share.firefox.dev/4aq6GSr (50ms)
Testcase seems to hit different codepaths compared to bug 2013749, hence i filed it separately. Though the profile seems to indicate that the MutationObserver is still heavy.
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Reporter | |
Updated•11 days ago
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Severity: -- → S3
Priority: -- → P3
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Description
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