[Webkit-unassigned] [Bug 167980] New: [GTK] Reduce TiledBackingStore tile coverage when on memory pressure state

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=167980

            Bug ID: 167980
           Summary: [GTK] Reduce TiledBackingStore tile coverage when on
                    memory pressure state
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: magomez at igalia.com
                CC: bugs-noreply at webkitgtk.org

Currently we use a hardcoded coverAreaMultiplier value of 2 in the TiledBackingStore, which means that the area we fill with tiles has up to 2 times the size of the visible area. While this is nice to make scrolling smoother, we are using more memory than needed to render the visible contents of layers (1 extra MB per tile).
When we are in memory pressure situation, we can reduce that value to use less tiles and improve the memory consumption.

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