Hi Team, Similar to Bug 248602, we are also slower in following Benchmark: Benchmark Link - (Selected - All) - https://testdrive-archive.azurewebsites.net/Performance/LiteBrite/Default.html --> Safari 16.1 - 16.4 seconds --> Chrome Canary 110 - 11.74 seconds --> Firefox Nightly 109 - 9.74 seconds --> STP 159 - 16 seconds (with Private Window) As can be seen, we are up to approx. 5 seconds slower than other browsers, it is just synthetic benchmark so it might not matter but it might be used to identify any slow path in Safari / Webkit, which can be optimised to get better performance in real-world websites. Just wanted to raise this bug, so it can be investigated. I have seen Blink / Chrome do some fixes for this benchmark but if I come across, I will post related bug details here. Thanks!
Looks like this exercises rendering code, text in particular.
This was Chromium bug - https://bugs.chromium.org/p/chromium/issues/detail?id=452256 and this was commit - it seems that they regressed it: https://src.chromium.org/viewvc/blink?view=revision&revision=189487 caused by this - https://src.chromium.org/viewvc/blink?view=revision&revision=186217
Lite Brite is similar to Holiday Lites benchmark and this commit improved performance of it in blink: https://src.chromium.org/viewvc/blink?view=revision&revision=164728 Holiday Lite - https://testdrive-archive.azurewebsites.net/Performance/HolidayLites/Default.html
<rdar://problem/103117566>
I am seeing slight different numbers (though I don't have FF nightly) Chrome (Version 110.0.5465.0 (Official Build) canary (arm64)): 16.74 Firefox (Version 107.0.1 (64bit)): 16.06 Safari trunk: 16.11
Created attachment 463939 [details] benchmark scores (screenshot)