Bug 247853

Summary: Web Inspector: Timelines Tab: Poor performance makes it almost unusable when capturing screenshots
Product: WebKit Reporter: Tristan Biesecker <sloths.slushy-0m>
Component: Web InspectorAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Major CC: inspector-bugzilla-changes, webkit-bug-importer
Priority: P2 Keywords: InRadar, Performance
Version: Safari 16   
Hardware: Mac (Apple Silicon)   
OS: macOS 13   
URL: https://www.bieseckerart.com/gallery

Tristan Biesecker
Reported 2022-11-13 00:04:16 PST
When using the Timelines Tab to monitor website performance, the performance is so poor that it effectively makes the tool unusable. Steps to reproduce: 1) Navigate to https://www.bieseckerart.com/gallery 2) Start an Events recording 3) Hover over some of the images and click on them to open the image modal 4) Close the modal and repeat Expected Result: The timeline view continues to remain responsive and can easily be stopped, started, etc. Observed Result: The web inspector, and the rest of the page, becomes extremely unresponsive very quickly.
Attachments
Tristan Biesecker
Comment 1 2022-11-13 00:06:51 PST
I just noticed that if I turn off capturing screenshots, performance is as expected.
Radar WebKit Bug Importer
Comment 2 2022-11-13 16:36:09 PST
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