Bug 255254

Summary: [UI-side compositing] Scrolling is not as smooth as it should be on 120Hz displays
Product: WebKit Reporter: Simon Fraser (smfr) <simon.fraser>
Component: ScrollingAssignee: Simon Fraser (smfr) <simon.fraser>
Status: RESOLVED FIXED    
Severity: Normal CC: simon.fraser, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Description Simon Fraser (smfr) 2023-04-10 15:36:04 PDT
The scrolling thread blocks on RemoteLayerTreeEventDispatcher::waitForRenderingUpdateCompletionOrTimeout() for too long (up to 8ms) on 120Hz displays, when it should only block for 4ms.
Comment 1 Simon Fraser (smfr) 2023-04-10 15:36:15 PDT
rdar://107837416
Comment 2 Simon Fraser (smfr) 2023-04-10 15:43:02 PDT
Pull request: https://github.com/WebKit/WebKit/pull/12591
Comment 3 EWS 2023-04-10 19:25:03 PDT
Committed 262801@main (80da2ab73cf5): <https://commits.webkit.org/262801@main>

Reviewed commits have been landed. Closing PR #12591 and removing active labels.