[Webkit-unassigned] [Bug 209858] New: [GTK] WebkitGTK Layout and Rendering High CPU Usage

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=209858

            Bug ID: 209858
           Summary: [GTK] WebkitGTK Layout and Rendering High CPU Usage
           Product: WebKit
           Version: Other
          Hardware: PC
                OS: Linux
            Status: NEW
          Keywords: Gtk
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aakash.kapoor at pm.me
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Created attachment 395169

  --> https://bugs.webkit.org/attachment.cgi?id=395169&action=review

High CPU Usage on Touchpad Gestures

Performing any pinch touchpad gesture causes a high CPU usage (leading to a sense of hanging up of webpage and unresponsiveness). Attached is a screenshot of WebInspector of what happens when I pinch to zoom in or zoom out. Even in general, scrolling causes a high CPU usage primarily caused by the Layout and Rendering part. In addition, this happens with and without content blocking both. Of course, without content blocking the web browser stutters even more because of a high number of Javascript events.
This is regardless of the website and is a general issue with the browser for a long time.

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