NEW248602
Slow performance than other browsers in IE Test Drive PopCorn Benchmark 
https://bugs.webkit.org/show_bug.cgi?id=248602
Summary Slow performance than other browsers in IE Test Drive PopCorn Benchmark
Ahmad Saleem
Reported 2022-12-01 07:22:59 PST
Hi Team, While just doing bit synthetic benchmark testings, I came across following: Benchmark - https://testdrive-archive.azurewebsites.net/Performance/Popcorn/Default.html Safari 16.1 (stutters visually and audio as well) - 8.11 seconds Safari Technology Preview 159 (stutters visually and audio as well) - 7.17 seconds (6.66 in Private Mode) [I do have AdGuard installed] Chrome Canary 110 - 1.79 seconds (no stutter) Firefox Nightly 109 - 1.33 seconds (no stutter). ___ MacBook Pro 14 inch - M1 Pro - 16 GB - Baseline ___ I think we should investigate both audio stutter and slow performance as well. Thanks!
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Ahmad Saleem
Comment 1 2022-12-01 07:31:13 PST
NOTE - I selected "large" popcorn size.
Alexey Proskuryakov
Comment 2 2022-12-01 09:04:35 PST
I cannot reproduce that much of a difference with newer macOS/Safari on an Intel MacBook Pro, FWIW: Safari was 3.5 seconds, and Chrome was 2.5 seconds. Looks like most time is spent in PlatformMediaSessionManager::maybeActivateAudioSession().
Alexey Proskuryakov
Comment 3 2022-12-01 09:07:38 PST
That was with default (medium) size. With large, I'm getting 9 seconds in Safari, and 3.5 in Chrome.
Radar WebKit Bug Importer
Comment 4 2022-12-01 13:25:04 PST
<rdar://problem/102874433>
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