[Webkit-unassigned] [Bug 186702] New: CodeBlock's SegmentedVector wastes 58KB of Vector capacity
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Fri Jun 15 15:02:48 PDT 2018
https://bugs.webkit.org/show_bug.cgi?id=186702
Bug ID: 186702
Summary: CodeBlock's SegmentedVector wastes 58KB of Vector
capacity
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
Assignee: webkit-unassigned at lists.webkit.org
Reporter: simon.fraser at apple.com
On theverge.com, tooling from bug 186698:
Wasted capacity: 58232 bytes (used 8144 of 66376 bytes, utilization: 12.27%) - 603 allocations
1 0x115829225 WTF::VectorBuffer<WTF::SegmentedVector<JSC::ArrayProfile, 4ul>::Segment*, 0ul>::VectorBuffer()
2 0x115829205 WTF::Vector<WTF::SegmentedVector<JSC::ArrayProfile, 4ul>::Segment*, 0ul, WTF::CrashOnOverflow, 16ul>::Vector()
3 0x1158291e5 WTF::Vector<WTF::SegmentedVector<JSC::ArrayProfile, 4ul>::Segment*, 0ul, WTF::CrashOnOverflow, 16ul>::Vector()
4 0x1158291c0 WTF::SegmentedVector<JSC::ArrayProfile, 4ul>::SegmentedVector()
5 0x11580fc45 WTF::SegmentedVector<JSC::ArrayProfile, 4ul>::SegmentedVector()
6 0x1158113aa JSC::CodeBlock::CodeBlock(JSC::VM*, JSC::Structure*, JSC::ScriptExecutable*, JSC::UnlinkedCodeBlock*, JSC::JSScope*, WTF::RefPtr<JSC::SourceProvider, WTF::DumbPtrTraits<JSC::SourceProvider> >&&, unsigned int, unsigned int)
7 0x1167404fb JSC::FunctionCodeBlock::FunctionCodeBlock(JSC::VM*, JSC::Structure*, JSC::FunctionExecutable*, JSC::UnlinkedFunctionCodeBlock*, JSC::JSScope*, WTF::RefPtr<JSC::SourceProvider, WTF::DumbPtrTraits<JSC::SourceProvider> >&&, unsigned int, unsigned int)
8 0x116740292 JSC::FunctionCodeBlock::FunctionCodeBlock(JSC::VM*, JSC::Structure*, JSC::FunctionExecutable*, JSC::UnlinkedFunctionCodeBlock*, JSC::JSScope*, WTF::RefPtr<JSC::SourceProvider, WTF::DumbPtrTraits<JSC::SourceProvider> >&&, unsigned int, unsigned int)
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