Bug 87466
| Summary: | [Forms] Rendering of select/optgroup/option is slow | ||
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| Product: | WebKit | Reporter: | yosin |
| Component: | Forms | Assignee: | Nobody <webkit-unassigned> |
| Status: | NEW | ||
| Severity: | Normal | CC: | ap |
| Priority: | P2 | ||
| Version: | 528+ (Nightly build) | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| URL: | http://mdupont.alwaysdata.net/chrome_test2.html | ||
| Bug Depends on: | 87467 | ||
| Bug Blocks: | |||
yosin
Imported from http://crbug.com/129334
When select elements contain lot of optgroup and option, rendering of these are slow.
| Attachments | ||
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| Add attachment proposed patch, testcase, etc. |
Alexey Proskuryakov
Duplicate of bug 43808?
yosin
(In reply to comment #1)
> Duplicate of bug 43808?
Thanks Alexey for information. I marked that bug as resolved.
This issue is happened when we use optgroup and option elements.
Here is some performance test results:
(appendChild 3000 options)
1. optgroup and one option, e.g. <optgorup label="1"><option value="1">one</option></optgroup>
124ms
2 optgroup and ten option, e.g. <optgorup label="1"><option>... 10 options
410ms ** too slow **
3.optgroup only
35ms
4. option
139ms