Bug 260458 - Massive performance regression on STP 176
Summary: Massive performance regression on STP 176
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: Safari Technology Preview
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2023-08-20 21:54 PDT by mic.gallego
Modified: 2023-08-27 21:55 PDT (History)
4 users (show)

See Also:

Attachments
Performance issue (1.14 MB, image/png)
2023-08-20 21:54 PDT, mic.gallego 		no flags Details
screen-recording with 267085@main (89.47 MB, video/quicktime)
2023-08-21 08:07 PDT, zalan 		no flags Details
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Description mic.gallego 2023-08-20 21:54:39 PDT 
Created attachment 467357 [details]
Performance issue

Hi,

I am not sure if the issue is on TP176 or earlier, but after testing one of our theme, I have near unusable performance on Safari (everything is butter smooth on other browsers). Here is the page you can play with:

https://prestige-new-version.myshopify.com/collections/all (the first time a password will be asked, enter rewblo as password, then go back to the listing page). As you scroll through the products you will experience massive lag. I am aware of the forced layout but those are unavoidable to have one of the feature we need, and it does not cause such issue on other browser nor older versions of Safari.

Thanks! :)
Comment 1 zalan 2023-08-21 08:07:33 PDT 
Created attachment 467366 [details]
screen-recording with 267085@main

I can't repro the perf issue on trunk. Will try with the most recent STP.
Comment 2 Radar WebKit Bug Importer 2023-08-27 21:55:24 PDT 
<rdar://problem/114545208>