[Webkit-unassigned] [Bug 111708] New: SegmentedString copy constructor is 1% of total time for background html parser?
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Thu Mar 7 03:50:49 PST 2013
https://bugs.webkit.org/show_bug.cgi?id=111708
Summary: SegmentedString copy constructor is 1% of total time
for background html parser?
Product: WebKit
Version: 528+ (Nightly build)
Platform: Unspecified
OS/Version: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: New Bugs
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: eric at webkit.org
CC: abarth at webkit.org, tonyg at chromium.org
Blocks: 111645
SegmentedString copy constructor is 1% of total time for background html parser?
Something is wrong here.
Running Time Self Symbol Name
18.6ms 0.9% 0.0 WTF::Deque<WebCore::SegmentedSubstring, 0ul>::Deque(WTF::Deque<WebCore::SegmentedSubstring, 0ul> const&)
18.3ms 0.8% 0.0 WebCore::SegmentedString::operator=(WebCore::SegmentedString const&)
18.3ms 0.8% 0.0 WebCore::HTMLSourceTracker::start(WebCore::SegmentedString&, WebCore::HTMLTokenizer*, WebCore::HTMLToken&)
18.3ms 0.8% 0.0 WebCore::BackgroundHTMLParser::pumpTokenizer()
18.3ms 0.8% 0.0 WTF::BoundFunctionImpl<WTF::FunctionWrapper<void (WebCore::BackgroundHTMLParser::*)(WTF::String const&)>, void (WTF::WeakPtr<WebCore::BackgroundHTMLParser>, WTF::String)>::operator()()
18.3ms 0.8% 0.0 WebCore::HTMLParserThread::runLoop()
That sample was taken with bug 107236 applied (so that I could actually see the parser amongst the rendering noise).
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