[Webkit-unassigned] [Bug 224316] New: DrawGlyph display items waste a lot of memory.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=224316

            Bug ID: 224316
           Summary: DrawGlyph display items waste a lot of memory.
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

On YouTube.com:

Total capacity: 324976 bytes (used 233376, wasted 91600), utilization: 71.81%) - 1004 allocations, entry size 16 bytes
1   0x1113968cf WTF::Vector<CGSize, 16ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>::Vector(WTF::Vector<CGSize, 16ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc> const&)
2   0x1113981e7 WebCore::DisplayList::ItemHandle::safeCopy(WebCore::DisplayList::ItemHandle) const
3   0x1113a3bd8 WebCore::DisplayList::InMemoryDisplayList::WritingClient::encodeItemInline(WebCore::DisplayList::ItemHandle, unsigned char*) const
4   0x1113994fe WebCore::DisplayList::ItemBuffer::append(WebCore::DisplayList::ItemHandle)

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