224253 2021-04-06 17:09:09 -0700 CSSValueList inline capacity causes vector wastage 2021-04-13 17:10:17 -0700 1 1 1 Unclassified WebKit CSS Safari Technology Preview Unspecified Unspecified NEW InRadar P2 Normal --- 1 simon.fraser webkit-unassigned koivisto simon.fraser webkit-bug-importer oldest_to_newest 1747711 0 simon.fraser 2021-04-06 17:09:09 -0700 Total capacity: 35648 bytes (used 11024, wasted 24624), utilization: 30.92%) - 1090 allocations, entry size 8 bytes 1 0x1061c4ac0 WebCore::CSSValueList::CSSValueList(WebCore::CSSValue::ValueSeparator) 2 0x106227bf8 WebCore::CSSPropertyParser::consumeAnimationShorthand(WebCore::StylePropertyShorthand const&, bool) 3 0x10622517b WebCore::CSSPropertyParser::parseShorthand(WebCore::CSSPropertyID, bool) 4 0x10621764b WebCore::CSSPropertyParser::parseValueStart(WebCore::CSSPropertyID, bool) 5 0x106215db1 WebCore::CSSPropertyParser::parseValue(WebCore::CSSPropertyID, bool, WebCore::CSSParserTokenRange const&, WebCore::CSSParserContext const&, WTF::Vector<WebCore::CSSProperty, 256ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>&, WebCore::StyleRuleType) 6 0x10620eff1 WebCore::CSSParserImpl::consumeDeclaration(WebCore::CSSParserTokenRange, WebCore::StyleRuleType) 7 0x10620d3d2 WebCore::CSSParserImpl::consumeDeclarationList(WebCore::CSSParserTokenRange, WebCore::StyleRuleType) 8 0x1062109bc WebCore::CSSParserImpl::consumeStyleRule(WebCore::CSSParserTokenRange, WebCore::CSSParserTokenRange) 9 0x10620de75 WebCore::CSSParserImpl::consumeQualifiedRule(WebCore::CSSParserTokenRange&, WebCore::CSSParserImpl::AllowedRulesType) 10 0x106205e06 WebCore::CSSParserImpl::parseStyleSheet(WTF::String const&, WebCore::CSSParserContext const&, WebCore::StyleSheetContents*, WebCore::CSSParser::RuleParsing) 11 0x1061fdd92 WebCore::StyleSheetContents::parseAuthorStyleSheet(WebCore::CachedCSSStyleSheet const*, WebCore::SecurityOrigin const*) 12 0x10650960a WebCore::HTMLLinkElement::setCSSStyleSheet(WTF::String const&, WTF::URL const&, WTF::String const&, WebCore::CachedCSSStyleSheet const*) 35KB wasted on YouTube.com because CSSValueList has inline capacity: Vector<Ref<CSSValue>, 4> m_values; Many keyframe lists just have 2 keyframes. 1749941 1 webkit-bug-importer 2021-04-13 17:10:17 -0700 <rdar://problem/76618359>