[Webkit-unassigned] [Bug 186742] TreeScopeOrderedMap wastes 132KB of HashTable capacity on nytimes.com

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=186742

--- Comment #2 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
Also these call sites:

Wasted capacity: 70928 bytes (used 11440 of 82368 bytes, utilization: 13.89%) - 1273 allocations
1   0x1076fd625 WTF::HashTable<WebCore::Element*, WebCore::Element*, WTF::IdentityExtractor, WTF::PtrHash<WebCore::Element*>, WTF::HashTraits<WebCore::Element*>, WTF::HashTraits<WebCore::Element*> >::HashTable()
2   0x1076fd605 WTF::HashSet<WebCore::Element*, WTF::PtrHash<WebCore::Element*>, WTF::HashTraits<WebCore::Element*> >::HashSet()
3   0x1076a8d65 WTF::HashSet<WebCore::Element*, WTF::PtrHash<WebCore::Element*>, WTF::HashTraits<WebCore::Element*> >::HashSet()
4   0x10789c652 WebCore::TreeScopeOrderedMap::MapEntry::MapEntry(WebCore::Element*)
5   0x10789c5fd WebCore::TreeScopeOrderedMap::MapEntry::MapEntry(WebCore::Element*)
6   0x10789c0cf WebCore::TreeScopeOrderedMap::add(WTF::AtomicStringImpl const&, WebCore::Element&, WebCore::TreeScope const&)::$_0::operator()() const
7   0x10789afd5 void WTF::HashMapEnsureTranslator<WTF::HashMap<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry, WTF::PtrHash<WTF::AtomicStringImpl const*>, WTF::HashTraits<WTF::AtomicStringImpl const*>, WTF::HashTraits<WebCore::TreeScopeOrderedMap::MapEntry> >::KeyValuePairTraits, WTF::PtrHash<WTF::AtomicStringImpl const*> >::translate<WTF::KeyValuePair<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry>, WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::add(WTF::AtomicStringImpl const&, WebCore::Element&, WebCore::TreeScope const&)::$_0>(WTF::KeyValuePair<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry>&, WTF::AtomicStringImpl const*&&, WebCore::TreeScopeOrderedMap::add(WTF::AtomicStringImpl const&, WebCore::Element&, WebCore::TreeScope const&)::$_0&&)
8   0x10789ac73 WTF::HashTableAddResult<WTF::HashTableIterator<WTF::AtomicStringImpl const*, WTF::KeyValuePair<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry>, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry> >, WTF::PtrHash<WTF::AtomicStringImpl const*>, WTF::HashMap<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry, WTF::PtrHash<WTF::AtomicStringImpl const*>, WTF::HashTraits<WTF::AtomicStringImpl const*>, WTF::HashTraits<WebCore::TreeScopeOrderedMap::MapEntry> >::KeyValuePairTraits, WTF::HashTraits<WTF::AtomicStringImpl const*> > > WTF::HashTable<WTF::AtomicStringImpl const*, WTF::KeyValuePair<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry>, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry> >, WTF::PtrHash<WTF::AtomicStringImpl const*>, WTF::HashMap<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry, WTF::PtrHash<WTF::AtomicStringImpl const*>, WTF::HashTraits<WTF::AtomicStringImpl const*>, WTF::HashTraits<WebCore::TreeScopeOrderedMap::MapEntry> >::KeyValuePairTraits, WTF::HashTraits<WTF::AtomicStringImpl const*> >::add<WTF::HashMapEnsureTranslator<WTF::HashMap<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry, WTF::PtrHash<WTF::AtomicStringImpl const*>, WTF::HashTraits<WTF::AtomicStringImpl const*>, WTF::HashTraits<WebCore::TreeScopeOrderedMap::MapEntry> >::KeyValuePairTraits, WTF::PtrHash<WTF::AtomicStringImpl const*> >, WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::add(WTF::AtomicStringImpl const&, WebCore::Element&, WebCore::TreeScope const&)::$_0>(WTF::AtomicStringImpl const*&&, WebCore::TreeScopeOrderedMap::add(WTF::AtomicStringImpl const&, WebCore::Element&, WebCore::TreeScope const&)::$_0&&)

Wasted capacity: 63448 bytes (used 42856 of 106304 bytes, utilization: 40.31%) - 22 allocations
1   0x1078997a5 WTF::HashTable<WTF::AtomicStringImpl const*, WTF::KeyValuePair<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry>, WTF::KeyValuePairKeyExtractor<WTF::KeyValuePair<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry> >, WTF::PtrHash<WTF::AtomicStringImpl const*>, WTF::HashMap<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry, WTF::PtrHash<WTF::AtomicStringImpl const*>, WTF::HashTraits<WTF::AtomicStringImpl const*>, WTF::HashTraits<WebCore::TreeScopeOrderedMap::MapEntry> >::KeyValuePairTraits, WTF::HashTraits<WTF::AtomicStringImpl const*> >::HashTable()
2   0x107899785 WTF::HashMap<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry, WTF::PtrHash<WTF::AtomicStringImpl const*>, WTF::HashTraits<WTF::AtomicStringImpl const*>, WTF::HashTraits<WebCore::TreeScopeOrderedMap::MapEntry> >::HashMap()
3   0x107899765 WTF::HashMap<WTF::AtomicStringImpl const*, WebCore::TreeScopeOrderedMap::MapEntry, WTF::PtrHash<WTF::AtomicStringImpl const*>, WTF::HashTraits<WTF::AtomicStringImpl const*>, WTF::HashTraits<WebCore::TreeScopeOrderedMap::MapEntry> >::HashMap()
4   0x107899745 WebCore::TreeScopeOrderedMap::TreeScopeOrderedMap()
5   0x107899725 WebCore::TreeScopeOrderedMap::TreeScopeOrderedMap()
6   0x107a54296 WebCore::HTMLDocument::HTMLDocument(WebCore::Frame*, WebCore::URL const&, unsigned char, unsigned int)
7   0x107a54358 WebCore::HTMLDocument::HTMLDocument(WebCore::Frame*, WebCore::URL const&, unsigned char, unsigned int)
8   0x10768a2a7 WebCore::HTMLDocument::create(WebCore::Frame*, WebCore::URL const&)

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