Closed
Bug 1513256
Opened 7 years ago
Closed 7 years ago
combobox dropdown is very slow when there are many options
Categories
(Core :: DOM: Core & HTML, defect)
Core
DOM: Core & HTML
Tracking
()
RESOLVED
DUPLICATE
of bug 1118086
| Tracking | Status | |
|---|---|---|
| firefox66 | --- | affected |
People
(Reporter: bzbarsky, Unassigned)
Details
Attachments
(1 file)
|
196.02 KB,
text/html
|
Details |
Please see the attached testcase. It's based on the page linked in https://news.ycombinator.com/item?id=18620671 but is a lot more safe-for-work. The actual page has 4974 items in the dropdown; my testcase has 4096, because that's simpler.
Profile shows lots of JS running under FireShowDropDownEvent (hundreds of ms worth!), but it's jitted, so I can't tell what the relevant scripts are offhand.
Mike, do you know who would know about this code and might have time to look at it?
Flags: needinfo?(mconley)
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Reporter | |
Comment 1•7 years ago
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Hmm. Maybe this is a dup of bug 1118086...
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Comment 2•7 years ago
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Sorry for the delay responding! Yes, I believe this is a dupe of bug 1118086.
Status: NEW → RESOLVED
Closed: 7 years ago
Flags: needinfo?(mconley)
Resolution: --- → DUPLICATE
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Description
•