[Webkit-unassigned] [Bug 186727] New: AtomicStringTable wastes 700KB of HashTable capacity on cnn.com

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=186727

            Bug ID: 186727
           Summary: AtomicStringTable wastes 700KB of HashTable capacity
                    on cnn.com
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com

Using tooling from bug 186698, loading can and running "notifyutil -p com.apple.WebKit.dumpHashTableCapacity" shows:

Wasted capacity: 695712 bytes (used 352864 of 1048576 bytes, utilization: 33.65%) - 1 allocations
1   0x1152d2755 WTF::HashTable<WTF::StringImpl*, WTF::StringImpl*, WTF::IdentityExtractor, WTF::StringHash, WTF::HashTraits<WTF::StringImpl*>, WTF::HashTraits<WTF::StringImpl*> >::HashTable()
2   0x1152d2735 WTF::HashSet<WTF::StringImpl*, WTF::StringHash, WTF::HashTraits<WTF::StringImpl*> >::HashSet()
3   0x1152d2715 WTF::HashSet<WTF::StringImpl*, WTF::StringHash, WTF::HashTraits<WTF::StringImpl*> >::HashSet()
4   0x1152d26f5 WTF::AtomicStringTable::AtomicStringTable()
5   0x1152d2625 WTF::AtomicStringTable::AtomicStringTable()
6   0x1152d2588 WTF::Thread::Thread()
7   0x1152d1655 WTF::Thread::Thread()
8   0x1152d7102 WTF::Thread::initializeCurrentTLS()

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