RESOLVED FIXED 270178
Bump the QoS of the IPC receive queue in the UIProcess 
https://bugs.webkit.org/show_bug.cgi?id=270178
Summary Bump the QoS of the IPC receive queue in the UIProcess
Chris Dumez
Reported 2024-02-27 10:33:07 PST
Bump the QoS of the IPC receive queue in the UIProcess. The IPC receive queue was running at a much lower QoS than the main thread, potentially causing delay in some performance-sensitive tasks. We've seen examples (see radar) of the main thread hanging, waiting on the IPC receive queue to release a lock for e.g. This tested as performance-neutral on most benchmarks. However, this tested as a ~0.7% progression on PLT5 on Apple Silicon.
Attachments
Add attachment proposed patch, testcase, etc.
Chris Dumez
Comment 1 2024-02-27 10:33:30 PST
<rdar://120745771>
Chris Dumez
Comment 2 2024-02-27 10:35:29 PST
Pull request: https://github.com/WebKit/WebKit/pull/25179
EWS
Comment 3 2024-02-28 13:23:55 PST
Committed 275462@main (a1ec0afd0898): <https://commits.webkit.org/275462@main> Reviewed commits have been landed. Closing PR #25179 and removing active labels.
Note You need to log in before you can comment on or make changes to this bug.