Bug 8945
| Summary: | REGRESSION: Scrolling is very slow when dragging the thumb | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Dave Hyatt <hyatt> |
| Component: | Layout and Rendering | Assignee: | Tim Omernick <timo> |
| Status: | RESOLVED FIXED | ||
| Severity: | Blocker | ||
| Priority: | P1 | ||
| Version: | 420+ | ||
| Hardware: | Mac | ||
| OS: | OS X 10.4 | ||
Dave Hyatt
On practically every page I go to, scrolling is now very slow when dragging the thumb quickly. I strongly suspect display throttling or coalesced updates.
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| Add attachment proposed patch, testcase, etc. |
Dave Hyatt
This is caused by display throttling.
defaults write com.apple.Safari WebKitThrottleWindowDisplay 0
will make the problems go away.
Tim Omernick
This was caused by my tweak to the window display throttle code to make it remember the last flush time (as opposed to the last display time).
Fixed on TOT by rolling out the change in question.
Dave Hyatt
This is not fixed for me. With a completely current build I still have horrible scrolling issues.
Dave Hyatt
Pilot error. Glyph map regression caused horrible slowness in TOT.