[Webkit-unassigned] [Bug 17203] New: High CPU usage loading HTML5 spec
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed Feb 6 22:23:17 PST 2008
http://bugs.webkit.org/show_bug.cgi?id=17203
Summary: High CPU usage loading HTML5 spec
Product: WebKit
Version: 525+ (Nightly build)
Platform: Macintosh
URL: http://www.whatwg.org/specs/web-apps/current-work/
OS/Version: Mac OS X 10.5
Status: NEW
Severity: Normal
Priority: P2
Component: New Bugs
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: webkit at mattlilek.com
This is likely a result of the combination of the use of some fancy new CSS
selectors and a large document, but loading the WHATWG's spec page results in
significant CPU usage while loading. r30053 nightly pegs my CPU at 100% for
10-15 seconds while its loading, while an older nightly (r29807) only spikes
the CPU for 1-2 seconds (2 GHz Core 2 Duo, 2 GB RAM, 10.5.1). Not sure what
can be done about it, but it's probably worth making it known regardless.
Part of the sample results from my r30060 debug build:
Total number in stack (recursive counted multiple, when >=5):
55 WTF::fastFree(void*)
48 WTF::HashTableIterator<int, int, WTF::IdentityExtractor<int>,
WTF::IntHash<int>, WTF::HashTraits<int>, WTF::HashTraits<int>
>::~HashTableIterator()
46 WebCore::AtomicString::impl() const
45 WTF::fastMalloc(unsigned long)
45 free
40
WebCore::CSSStyleSelector::checkSelector(WebCore::CSSSelector*,
WebCore::Element*, bool, bool)
39
WebCore::CSSStyleSelector::checkOneSelector(WebCore::CSSSelector*,
WebCore::Element*, bool, bool)
39 WebCore::String::impl() const
37 malloc
36 WTF::HashMap<int, WebCore::GlyphPageTreeNode*,
WTF::IntHash<unsigned int>, WTF::HashTraits<int>,
WTF::HashTraits<WebCore::GlyphPageTreeNode*> >::HashMap(WTF::HashMap<int,
WebCore::GlyphPageTreeNode*, WTF::IntHash<unsigned int>, WTF::HashTraits<int>,
WTF::HashTraits<WebCore::GlyphPageTreeNode*> > const&)
36 WTF::HashTable<int, std::pair<int, int>,
WTF::PairFirstExtractor<std::pair<int, int> >, WTF::IntHash<unsigned int>,
WTF::PairHashTraits<WTF::HashTraits<int>, WTF::HashTraits<int> >,
WTF::HashTraits<int> >::HashTable(WTF::HashTable<int, std::pair<int, int>,
WTF::PairFirstExtractor<std::pair<int, int> >, WTF::IntHash<unsigned int>,
WTF::PairHashTraits<WTF::HashTraits<int>, WTF::HashTraits<int> >,
WTF::HashTraits<int> > const&)
36 malloc_zone_malloc
34 WTF::HashTableConstIterator<int, int,
WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> >::~HashTableConstIterator()
34 WTF::isForbidden()
32 WTF::HashTableIterator<int, int, WTF::IdentityExtractor<int>,
WTF::IntHash<int>, WTF::HashTraits<int>, WTF::HashTraits<int>
>::HashTableIterator(WTF::HashTableIterator<int, int,
WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> > const&)
32 szone_free
31 WebCore::operator==(WebCore::AtomicString const&,
WebCore::AtomicString const&)
31 szone_malloc
30 WTF::HashTableConstIterator<int, int,
WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> >::HashTableConstIterator(WTF::HashTableConstIterator<int,
int, WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> > const&)
30 WebCore::CSSStyleSelector::matchRules(WebCore::CSSRuleSet*,
int&, int&)
28 WTF::RefPtr<WebCore::StringImpl>::get() const
27
WebCore::CSSStyleSelector::matchRulesForList(WebCore::CSSRuleDataList*, int&,
int&)
26 WebCore::Font::~Font()
26 WebCore::String::~String()
25
WebCore::CSSStyleSelector::checkSelector(WebCore::CSSSelector*)
25
WebCore::FontDescription::FontDescription(WebCore::FontDescription const&)
24 WebCore::RenderStyle::~RenderStyle()
24 __spin_lock
23 WTF::RefPtr<WebCore::StringImpl>::~RefPtr()
23 tiny_malloc_from_free_list
22 WebCore::Font::Font(WebCore::Font const&)
22
WebCore::StyleInheritedData::StyleInheritedData(WebCore::StyleInheritedData
const&)
21 WebCore::FontDescription::~FontDescription()
20 WTF::HashMap<int, WebCore::GlyphPageTreeNode*,
WTF::IntHash<unsigned int>, WTF::HashTraits<int>,
WTF::HashTraits<WebCore::GlyphPageTreeNode*> >::~HashMap()
20 WTF::HashTable<int, std::pair<int, int>,
WTF::PairFirstExtractor<std::pair<int, int> >, WTF::IntHash<unsigned int>,
WTF::PairHashTraits<WTF::HashTraits<int>, WTF::HashTraits<int> >,
WTF::HashTraits<int> >::~HashTable()
20 WebCore::DataRef<WebCore::StyleInheritedData>::~DataRef()
20 WebCore::FontFamily::FontFamily(WebCore::FontFamily const&)
20 WebCore::String::String(char const*)
20 std::pair<WTF::HashTableIterator<int, int,
WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> >, bool>::pair(WTF::HashTableIterator<int, int,
WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> > const&, bool const&)
20 std::pair<WTF::HashTableIteratorAdapter<WTF::HashTable<int,
int, WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> >, WebCore::AtomicStringImpl*>, bool>::~pair()
19 WTF::HashSet<WebCore::AtomicStringImpl*,
WTF::PtrHash<WebCore::AtomicStringImpl*>,
WTF::HashTraits<WebCore::AtomicStringImpl*> >::add(WebCore::AtomicStringImpl*
const&)
19 WebCore::CSSSelector::hasTag() const
19 WebCore::FontFamily::~FontFamily()
19 WebCore::QualifiedName::operator!=(WebCore::QualifiedName
const&) const
19 std::pair<WTF::HashTableIterator<int, int,
WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> >, bool> WTF::HashTable<int, int,
WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> >::add<WebCore::AtomicStringImpl*,
WebCore::AtomicStringImpl*, WTF::HashSetTranslator<true,
WebCore::AtomicStringImpl*, WTF::HashTraits<WebCore::AtomicStringImpl*>,
WTF::HashTraits<int>, WTF::PtrHash<WebCore::AtomicStringImpl*> >
>(WebCore::AtomicStringImpl* const&, WebCore::AtomicStringImpl* const&)
19 std::pair<WTF::HashTableIterator<int, int,
WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> >, bool>::~pair()
18 WTF::HashTableIteratorAdapter<WTF::HashTable<int, int,
WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> >,
WebCore::AtomicStringImpl*>::~HashTableIteratorAdapter()
18 WebCore::StyleInheritedData::~StyleInheritedData()
17 std::pair<WTF::HashTableIteratorAdapter<WTF::HashTable<int,
int, WTF::IdentityExtractor<int>, WTF::IntHash<int>, WTF::HashTraits<int>,
WTF::HashTraits<int> >, WebCore::AtomicStringImpl*>,
bool>::pair<WTF::HashTableIterator<int, int, WTF::IdentityExtractor<int>,
WTF::IntHash<int>, WTF::HashTraits<int>, WTF::HashTraits<int> >,
bool>(std::pair<WTF::HashTableIterator<int, int, WTF::IdentityExtractor<int>,
WTF::IntHash<int>, WTF::HashTraits<int>, WTF::HashTraits<int> >, bool> const&)
16 WebCore::operator!=(WebCore::AtomicString const&,
WebCore::AtomicString const&)
15 WTF::HashTableConstIterator<int, std::pair<int, int>,
WTF::PairFirstExtractor<std::pair<int, int> >, WTF::IntHash<unsigned int>,
WTF::PairHashTraits<WTF::HashTraits<int>, WTF::HashTraits<int> >,
WTF::HashTraits<int> >::~HashTableConstIterator()
15 WebCore::CSSSelector::hasAttribute() const
15 WebCore::CSSStyleSelector::applyProperty(int,
WebCore::CSSValue*)
15 WebCore::QualifiedName::operator==(WebCore::QualifiedName
const&) const
15 WebCore::StringImpl::StringImpl(char const*, unsigned int)
[snip]
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