Wed Nov 13 2024 05:02:45 PST
 Those who write software only for pay should go hurt some other field. - Erik Naggum
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443 bugs found.
ID Product Comp Assignee▲ Status▲ Resolution Summary Changed
34788 WebKit Platform webkit-unassigned UNCO --- Use RGB16 format for images 2010-02-10
122142 WebKit History webkit-unassigned UNCO --- Release expired pages in the page cache more often 2016-01-02
115735 WebKit CSS kling NEW --- Put StyleRule and its selector list in the same allocation block. 2013-05-08
118955 WebKit Page Loa kling NEW --- Strive to keep using the original request KURL instead of replacing it with identical copies. 2013-08-02
138608 WebKit JavaScri kling NEW --- RegExp.exec() should do a single pass match-and-gather. 2014-12-16
144599 WebKit JavaScri kling NEW --- Add a fast path for simple Weak finalization. 2015-05-04
145785 WebKit JavaScri kling NEW --- [JSC] Polymorphic{Get,Put}ByIdList::addAccess() should optimize for size, not speed. 2015-06-08
148495 WebKit WebCore kling NEW --- DOM Structure and Constructor caches should be weak 2015-10-19
153077 WebKit Web Temp kling NEW --- BumpArena should fall back to FastMalloc. 2016-01-13
153196 WebKit Web Temp kling NEW --- Make BumpArena less VM hungry. 2016-01-18
153627 WebKit Page Loa kling NEW --- MemoryCache should more eagerly prune dead resources with no decoded data. 2016-01-28
154955 WebKit bmalloc kling NEW --- bmalloc could benefit from using vm_kernel_page_size for its page size 2016-03-03
162286 WebKit JavaScri kling NEW --- Array.prototype.join() should use fast path for undecided indexing types. 2016-09-20
167556 WebKit DOM kling NEW --- Avoid synchronous style recalc in Document::finishedParsing(). 2022-07-01
167569 WebKit DOM kling NEW --- Don't create "orphaned tree" JS wrappers when moving subtrees around. 2017-01-29
169077 WebKit JavaScri kling NEW --- Disable JavaScript JIT in non-audible background tabs 2022-02-09
60017 WebKit WebCore webkit-unassigned NEW --- PreloadScanner should fetch iframes 2012-07-09
62590 WebKit Page Loa webkit-unassigned NEW --- REGRESSION(r82934-r83016): Non-parallel downloads of linked stylesheets with media attribute 2022-12-04
71886 WebKit Page Loa webkit-unassigned NEW --- Defer applying style recalculation when stylesheet is loaded to improve page load performance 2017-07-18
77037 WebKit Tools / webkit-unassigned NEW --- Polish performance tests and run-perf-tests until they shine 2014-03-19
97122 WebKit JavaScri webkit-unassigned NEW --- JS binding through JSC API is much slower than binding through WebCore 2013-07-11
172911 WebKit Layout a webkit-unassigned NEW --- Elements with position: fixed; repaint when window scroll position is set via JavaScript 2017-06-20
202260 WebKit Canvas webkit-unassigned NEW --- Bad performance when drawing bezier paths into a canvas 2023-12-05
208249 WebKit WebKitGT webkit-unassigned NEW --- With Epiphany, mouse hovers across the emails list in GMail is noticeably slower than Firefox 2022-09-28
215045 WebKit Media webkit-unassigned NEW --- [GStreamer] Very slow when scrolling Divi websites 2024-10-04
236417 WebKit Media webkit-unassigned NEW --- Play does not resume after pausing on Udemy.com and other websites 2022-03-02
243262 WebKit CSS webkit-unassigned NEW --- Extremely slow text entry in trupanion service chat window 2022-07-27
245783 WebKit WebKitGT webkit-unassigned NEW --- [GTK] Slow performance issues tracker bug (scrolling, animations, drag & drop, input) 2024-10-04
247853 WebKit Web Insp webkit-unassigned NEW --- Web Inspector: Timelines Tab: Poor performance makes it almost unusable when capturing screenshots 2022-11-13
250988 WebKit WebKitGT webkit-unassigned NEW --- [GTK] Slow scrolling of the Tiki website frontpage 2024-10-04
250998 WebKit WebKitGT webkit-unassigned NEW --- [GTK] Very slow scrolling on Apple's product pages on 4K HiDPI displays 2024-10-04
251016 WebKit WebKitGT webkit-unassigned NEW --- [GTK] Youtube dark theme's "Ambient Mode" creates extreme slowness, destroys playback and UI performance on Epiphany 2024-05-14
252846 WebKit WebKitGT webkit-unassigned NEW --- [GTK] Slow to load most banking websites 2023-04-28
256105 WebKit WebKitGT webkit-unassigned NEW --- [GTK] Extremely slow animation of scaled images with shadows on the Divi theme website showcase page 2023-04-28
261123 WebKit HTML Edi webkit-unassigned NEW --- Performance improvement for the word boundary finding algorithm (findNextWordFromIndex) 2024-06-26
262158 WebKit Web Insp webkit-unassigned NEW --- Web Inspector: Performance issue with search tab and single character 2023-09-26
264966 WebKit WebKitGT webkit-unassigned NEW --- [GTK] Slow CSS animations and dropped frames when animating `transition-property: transform, filter;` on `filter: opacity` with more than 2 large images 2023-11-17
265038 WebKit Canvas webkit-unassigned NEW --- Canvas rendering is janky 2023-11-20
265048 WebKit WebKitGT webkit-unassigned NEW --- [GTK] Slow CSS animations and dropped frames when doing a transition using a gradient as an alpha mask between large images 2023-11-17
267774 WebKit WebKitGT webkit-unassigned NEW --- [GTK] Slow to load GMail's inbox (or search results) 2024-01-19
278692 WebKit WebKitGT webkit-unassigned NEW --- [GTK] Sluggish scrolling and images unloading on Hotels.com search results listings 2024-09-27
278695 WebKit WebKitGT webkit-unassigned NEW --- [GTK] WebGL: slow framerate, sluggish panning on the F4 demo 3D map of Paris with lots of trees 2024-08-27
279239 WebKit SVG webkit-unassigned NEW --- SVG hit testing with 10.000+ nodes extremely slow 2024-09-13
280920 WebKit WebKitGT webkit-unassigned NEW --- [GTK] [Skia] Minibrowser is slow to scroll in 4K HiDPI on immigration consulting website's front page 2024-10-04
221738 WebKit WebKitGT cgarcia REOP --- [GTK][WPE] Async Scrolling: Slow scrolling and CSS animations on a static page 2024-10-04
144516 WebKit Web Temp kling REOP --- Generated static StringImpls should have static flag set. 2015-05-02
145115 WebKit JavaScri kling REOP --- [JSC] Speed up URL encode/decode by using bitmaps instead of strchr(). 2015-05-20
145379 WebKit JavaScri kling REOP --- Try to use StringView when comparing JSStrings for equality. 2015-05-29
145719 WebKit Layout a kling REOP --- [iOS] Don't force compositing layers for no-op 3D transforms on low-memory devices. 2015-06-06
151242 WebKit JavaScri kling REOP --- [JSC] JSPropertyNameEnumerator could be destructorless. 2015-11-24
152662 WebKit Web Temp kling REOP --- StringBuilder often creates two StringImpls. 2016-01-03
152696 WebKit Web Temp kling REOP --- Fragmentation-free allocator for eternal and/or coupled allocations. 2016-01-19
153169 WebKit CSS kling REOP --- Give RuleSet a BumpArena and start using it for RuleDataVectors. 2016-01-19
153188 WebKit CSS kling REOP --- Allocate style sheet media queries in BumpArena. 2016-01-19
153978 WebKit JavaScri kling REOP --- Visiting a WeakBlock should report bytes visited, since we reported them allocated. 2016-02-10
154014 WebKit WebCore kling REOP --- [iOS] Throw away some unlinked code when navigating to a new page. 2016-02-09
154726 WebKit Web Temp kling REOP --- [Darwin] Use vm_kernel_page_size for WTF::pageSize(). 2016-02-26
158941 WebKit Images kling REOP --- When navigating, discard decoded image data that is only live due to page cache. 2016-06-21
159329 WebKit Layout a kling REOP --- [Mac] Get rid of the old timey rubber-banding linen pattern. 2016-07-06
169070 WebKit WebCore kling REOP --- Don't keep dead resources in MemoryCache while under memory pressure. 2017-03-15
170042 WebKit Web Temp kling REOP --- Make inactive web processes behave as though under memory pressure. 2022-02-09
88869 WebKit CSS webkit-unassigned REOP --- renderer should not block on script-inserted stylesheets 2023-09-18
56944 WebKit Canvas kling RESO FIXE [Qt] "Unwavering" HTML5 game freezes the web page. 2011-05-04
22007 WebKit Layout a manyoso RESO WORK Scrolling speed 2010-02-08
20054 WebKit Layout a webkit-qt-unassigned RESO DUPL Showing large plain-text files is extremely slow 2010-03-10
43742 WebKit JavaScri webkit-unassigned RESO FIXE REGRESSION(r58469): Math.pow() always returns double-backed JSValue which is extremely slow as array subscript 2010-08-18
237918 WebKit WebGL webkit-unassigned RESO DUPL REGRESSION(iOS 15.4): threejs experiencing critical performance issues (flickering, rendering problems) 2022-05-26
16708 WebKit CSS abecsi RESO FIXE CSS: Slow parsing of rgb() with percent values 2011-03-31
159475 WebKit WebKit M ajuma RESO FIXE Implement IntersectionObserver 2020-02-21
89246 WebKit Platform a.renevier RESO FIXE [Cairo] do not multiply/demultiply colors when alpha is 255 2012-10-25
34168 WebKit WebKit Q benjamin RESO FIXE [Qt] Enable FAST_MOBILE_SCROLLING on Qt embedded platforms 2010-03-22
34501 WebKit Platform benjamin RESO DUPL [Qt] Poor Performance of QtWebKit layouting on Mac 2010-04-27
38179 WebKit Layout a benjamin RESO INVA Due to ScrollView, QWebPage::setViewportSize() forces two layout of the render tree 2013-12-23
40797 WebKit Images benjamin RESO FIXE [Qt] Decode images directly to QPixmap 2011-04-19
20180 WebKit DOM catfish.man RESO FIXE Matching :nth-child selectors is slow 2008-09-15
156639 WebKit WebKit2 cdumez RESO FIXE [WK2][iOS] Only adjust network responses' MIME type for QuickLook in the context of a main resource load 2016-04-18
252545 WebKit WebKitGT cgarcia RESO FIXE [GTK][WPE] Constant high idle CPU usage in front of any logged in page on Trello.com 2024-07-24
174434 WebKit New Bugs commit-queue RESO FIXE REGRESSION(r219361): Huge PLUM memory regression on iOS (Requested by kling on #webkit). 2017-07-12
29279 WebKit Platform cshu RESO INVA [Qt] Use RGB16 format for images on Symbian platform 2010-03-05
108941 WebKit Platform d-r RESO FIXE [HarfBuzz][Cairo] harfBuzzGetGlyph is slow and hot 2013-02-05
43179 WebKit Platform kimmo.t.kinnunen RESO FIXE [Qt] NPAPI Plugin metadata should be cached, and loading a plugin should not require loading every plugin 2010-08-30
32530 WebKit Layout a kling RESO FIXE QtWebkit creates an unnecessary deep copy of images when canvas drawing is done 2012-02-02
42513 WebKit WebCore kling RESO FIXE [Qt] Don't unnecessarily copy QPainterPath in fillPath() and strokePath() 2010-07-19
51037 WebKit Layout a kling RESO FIXE [Qt] Avoid GraphicsContext save/restore in Image::drawPattern() 2010-12-14
51106 WebKit Text kling RESO FIXE [Qt] Implement the fast font path for Qt 2011-05-10
56168 WebKit JavaScri kling RESO INVA Avoid slow-path for put() in Array.slice() 2015-05-22
59764 WebKit Canvas kling RESO FIXE Canvas: Use fast, approximate dirty rects for stroke() 2011-07-11
60462 WebKit Layout a kling RESO FIXE [Qt] Support shadowed text in fast font path. 2011-05-17
60703 WebKit CSS kling RESO FIXE CSS: Fast path for 'px' lengths should be case-insensitive. 2011-05-16
61281 WebKit Layout a kling RESO INVA [Qt] GraphicsLayerQt: Avoid queued invalidations for already-dirty areas. 2011-05-23
77982 WebKit UI Event kling RESO FIXE EventListenerMap: Use Vector instead of HashMap as backend. 2012-09-09
97916 WebKit CSS kling RESO FIXE 471kB below StyleSheetContents::parserAppendRule() on Membuster3. 2012-09-28
98406 WebKit Web Temp kling RESO FIXE Lower minimum table size of WTF::HashTable to reduce memory usage. 2013-01-04
106484 WebKit SVG kling RESO FIXE SVG-as-image: Throw out cached bitmap renderings after they sit unused for some time. 2013-01-09
107111 WebKit CSS kling RESO FIXE CSS: Make tag sub-selectors standalone CSSSelectors. 2013-01-21
108029 WebKit JavaScri kling RESO FIXE JSC: SourceProviderCache is memory hungry. 2013-01-29
108033 WebKit JavaScri kling RESO FIXE JSC: FunctionParameters are memory hungry. 2013-01-28
108410 WebKit Web Temp kling RESO FIXE Vector should consult allocator about ideal size when choosing capacity. 2013-02-04
108835 WebKit Text kling RESO FIXE Optimize GlyphPage for case where all glyphs are available in the same font. 2013-02-26
109247 WebKit JavaScri kling RESO FIXE JSC: Lower minimum PropertyTable size. 2014-07-16
109357 WebKit Text kling RESO FIXE RenderText: Access characters through m_text instead of caching data pointers separately. 2013-02-10
109366 WebKit Layout a kling RESO FIXE RenderStyle should use copy-on-write inheritance for NinePieceImage. 2013-02-10
109368 WebKit JavaScri kling RESO WONT Shrink-wrap UnlinkedCodeBlock members. 2013-09-06
110854 WebKit JavaScri kling RESO FIXE Unused Structure property tables waste 14MB on Membuster. 2013-03-06
110972 WebKit WebCore kling RESO WONT [JSC] Atomic-ize strings before caching them in jsStringWithCache(). 2013-07-17
111275 WebKit JavaScri kling RESO FIXE Shrink JSC::HashTable entries. 2013-03-03
111323 WebKit JavaScri kling RESO FIXE Add simple vector traits for JSC::Identifier. 2013-03-04
111341 WebKit CSS kling RESO FIXE CSSParser: Avoid temporary String when parsing hex colors. 2013-03-04
113764 WebKit Layout a kling RESO FIXE Render images with low-quality scaling while FrameView is being resized. 2013-04-04
113938 WebKit DOM kling RESO WONT Element: Unionize tagQName and elementData to save space. 2017-03-14
114292 WebKit Layout a kling RESO FIXE [GoodNotGreat] Throttle resize events during live window resize. 2013-04-23
114502 WebKit Layout a kling RESO WONT Use view-sized tiles during live window resize. 2013-04-12
114590 WebKit CSS kling RESO FIXE Specialize propertyCount() in StylePropertySet subclasses. 2013-04-14
114875 WebKit Text kling RESO FIXE [Mac] ComplexTextController is slow with large numbers of text runs. 2013-04-19
115037 WebKit Page Loa kling RESO FIXE XSSAuditor performance regression due to threaded parser changes. 2013-04-23
115073 WebKit Layout a kling RESO FIXE Micro-optimize Length::initFromLength(). 2013-04-23
115116 WebKit CSS kling RESO FIXE CSS attribute selectors cause unnecessary style recalc when setting attribute to same value. 2013-04-24
115177 WebKit Layout a kling RESO FIXE Add FINAL decorators to the InlineBox class hierarchy. 2013-04-25
115199 WebKit Layout a kling RESO FIXE When updating geometry, send JavaScript resize before before layout/paint. 2013-05-12
115357 WebKit Web Insp kling RESO FIXE Add branch-prediction hint to FAST_RETURN_IF_NO_FRONTENDS. 2013-04-29
115569 WebKit WebKit M kling RESO FIXE Use NotNull tag for placement new in WebCore. 2013-05-03
115581 WebKit CSS kling RESO FIXE Remove CSS selector profiler branches from ElementRuleCollector loop. 2013-05-04
115590 WebKit CSS kling RESO FIXE Reoptimize free-standing :focus/link/visited/-webkit-any-link selectors. 2013-05-09
115902 WebKit CSS kling RESO FIXE Caching of generated images in CSS should be smarter. 2013-05-10
115977 WebKit Layout a kling RESO FIXE Apply FINAL to the RenderObject hierarchy. 2013-07-26
115984 WebKit DOM kling RESO FIXE Apply FINAL to the Node hierarchy. 2013-05-12
116250 WebKit Layout a kling RESO FIXE Changes in text-only properties shouldn't cause repaints unless there is actually text. 2013-05-17
116344 WebKit Layout a kling RESO FIXE Ads on theverge.com cause repaints when hovered, even though content doesn't visibly change. 2013-05-17
116371 WebKit CSS kling RESO FIXE Plug leak in CSSSelectorList::deleteSelectors(). 2013-05-17
116489 WebKit HTML Edi kling RESO FIXE Avoid caret repaints if we're not showing carets anyway. 2013-05-21
116703 WebKit WebCore kling RESO FIXE Typing in Safari's unified field causes unnecessary web content repaints. 2013-05-24
116776 WebKit HTML Edi kling RESO FIXE Don't instantiate ChildNodeLists just to get a child count. 2013-05-25
116782 WebKit DOM kling RESO FIXE TreeScope::rootNode() should return a ContainerNode. 2013-05-26
116965 WebKit CSS kling RESO FIXE Move computed style extraction out of CSSComputedStyleDeclaration. 2013-05-29
116968 WebKit CSS kling RESO FIXE Take ComputedStyleExtractor for a spin. 2013-05-29
117019 WebKit CSS kling RESO FIXE Avoid using CSSOM style declarations in HTML editing. 2013-05-30
117029 WebKit Layout a kling RESO FIXE Fix double hash lookup in RenderView::repaintSelection() loop. 2013-05-30
117030 WebKit Page Loa kling RESO FIXE Fix double hash lookup in DocumentLoader::removeSubresourceLoader(). 2013-05-30
117031 WebKit UI Event kling RESO FIXE Fix double hash lookup in DocumentEventQueue::cancelEvent(). 2013-05-30
117032 WebKit Plug-ins kling RESO FIXE Fix double hash lookup in WebPage::determinePrimarySnapshottedPlugIn() loop. 2013-05-30
117243 WebKit CSS kling RESO FIXE Remove unnecessary null checks in SelectorChecker::checkOne(). 2013-06-05
117248 WebKit Layout a kling RESO FIXE Fix some inefficiencies in AnimationController's composite animation map. 2013-06-05
118748 WebKit WebCore kling RESO FIXE Atomicize HTMLAnchorElement.hash before passing it to JS. 2013-07-18
118852 WebKit JavaScri kling RESO FIXE CodeBlock::m_argumentValueProfiles wastes a lot of memory. 2013-07-18
118875 WebKit JavaScri kling RESO FIXE CodeBlock DFG entry list isn't getting shrunk-to-fit after linking. 2013-07-18
118952 WebKit Page Loa kling RESO FIXE KURL creates duplicate strings when completing data: URIs. 2013-07-23
119046 WebKit Layout a kling RESO FIXE RenderMenuList computes the width of its longest option twice. 2013-07-24
119185 WebKit Layout a kling RESO WONT RenderStyle default constructor shouldn't initialize bitfields individually. 2013-07-27
119188 WebKit Layout a kling RESO INVA Streamline RenderStyle construction and inheritance. 2014-12-07
119199 WebKit Accessib kling RESO FIXE Don't update the text track override CSS every time a media element is created. 2013-07-28
119236 WebKit CSS kling RESO FIXE Inactive style sheets should not trigger style recalc when loaded. 2013-07-30
119295 WebKit Web Temp kling RESO FIXE Shrink Vectors with inline capacity. 2013-07-31
119370 WebKit CSS kling RESO FIXE FINALize StyleSheet subclasses. 2013-07-31
119428 WebKit CSS kling RESO FIXE Removing an empty style sheet shouldn't trigger style recalc. 2013-08-02
119442 WebKit CSS kling RESO FIXE Removing a <link> element with an empty stylesheet shouldn't trigger style recalc. 2013-08-02
119475 WebKit CSS kling RESO FIXE Inserting a rule into an empty style sheet shouldn't trigger style recalc unless necessary. 2013-08-04
119488 WebKit Layout a kling RESO FIXE Style recalc after all pending sheets finish loading shouldn't have to be synchronous. 2014-11-18
119568 WebKit CSS kling RESO FIXE Inserting multiple rules into an empty style sheet should avoid style recalc if possible. 2013-08-08
125483 WebKit Page Loa kling RESO FIXE [Mac] Stop not caching HTTP resources with "Vary" header in response. 2013-12-12
131196 WebKit Bindings kling RESO FIXE Fast-path for casting JS wrappers to JSNode. 2014-04-03
131210 WebKit Bindings kling RESO FIXE Fast-path for casting JS wrappers to JSElement. 2014-04-03
131609 WebKit JavaScri kling RESO FIXE Array.prototype.concat should allocate output storage only once. 2014-04-14
132749 WebKit JavaScri kling RESO FIXE 8.8% spent in Object.prototype.hasOwnProperty() on sbperftest. 2014-05-09
132828 WebKit JavaScri kling RESO FIXE 0.4% of PLT3 in JSCell::structure() below JSObject::visitChildren(). 2014-05-12
133027 WebKit Layout a kling RESO FIXE REGRESSION (r166422): All RenderBox objects grew 104 bytes from adding repaint timers. 2014-05-17
133987 WebKit Platform kling RESO FIXE Web process main thread priority is lower than some network process threads. 2014-06-17
134203 WebKit JavaScri kling RESO FIXE Inline the UnlinkedInstructionStream::Reader logic. 2014-06-23
134437 WebKit Page Loa kling RESO FIXE No need to lazily initialize ResourceResponse internals when accessing timing data. 2014-06-30
135217 WebKit JavaScri kling RESO FIXE Allocate the whole RegExpMatchesArray backing store up front. 2014-08-14
135344 WebKit CSS kling RESO FIXE REGRESSION (r160806): CSS zoom property doesn't work on anything inside anchors. 2014-07-28
136348 WebKit JavaScri kling RESO FIXE Use JSString::toIdentifier() in more places. 2014-08-28
136458 WebKit JavaScri kling RESO FIXE Optimize own property GetByVals with rope string subscripts. 2014-09-02
137189 WebKit DOM kling RESO LATE Try to detect no-op innerHTML mutations and avoid repainting. 2022-08-12
138255 WebKit JavaScri kling RESO FIXE Make writes to RegExpObject.lastIndex cacheable. 2014-10-31
138406 WebKit Layout a kling RESO FIXE Simple line layout: support text-transform: lowercase|uppercase|capitalize 2014-11-05
138663 WebKit JavaScri kling RESO FIXE Generate get_by_id for bracket access with constant string subscript. 2014-11-12
138702 WebKit JavaScri kling RESO FIXE Generate put_by_id for bracket assignment with constant string subscript. 2014-11-13
138791 WebKit HTML Edi kling RESO FIXE Avoid synchronous style recalc when mutating a Node inside FrameSelection. 2014-11-17
138850 WebKit Layout a kling RESO FIXE Avoid synchronous style recalc in Document.activeElement 2014-11-18
141128 WebKit Layout a kling RESO DUPL Shrink RenderBlock. 2015-02-01
141129 WebKit Layout a kling RESO FIXE Shrink RenderBlock. 2015-02-01
141313 WebKit JavaScri kling RESO FIXE [iOS] Run a full garbage collection on memory warning. 2015-02-12
141943 WebKit Layout a kling RESO WONT [Mac] WebKit abandons overlay scrollbar CALayers. 2015-04-24
142024 WebKit Platform kling RESO FIXE [Cocoa] Prod libcache to drop caches in memory pressure relief handler. 2015-02-26
142090 WebKit WebCore kling RESO FIXE Use NeverDestroyed for JS wrapper owners. 2015-02-27
142115 WebKit JavaScri kling RESO FIXE Stale WeakGCMap entries are keeping tons of WeakBlocks alive unnecessarily. 2015-03-09
142139 WebKit Platform kling RESO FIXE [Cocoa] Purge SQLite page cache when under memory pressure. 2015-02-28
142310 WebKit JavaScri kling RESO FIXE GC should compute stack bounds and dump registers at the earliest opportunity. 2015-03-04
142454 WebKit JavaScri kling RESO FIXE JITThunks keeps finalized Weaks around, pinning WeakBlocks. 2015-03-08
142460 WebKit JavaScri kling RESO FIXE BuiltinExecutables keeps finalized Weaks around, pinning WeakBlocks. 2015-03-08
142939 WebKit JavaScri kling RESO FIXE Make UnlinkedFunctionExecutable fit in a 128-byte cell. 2015-03-21
142988 WebKit Platform kling RESO FIXE [Darwin] Boost the web process QoS level while handling a synchronous IPC message. 2015-03-26
143152 WebKit History kling RESO FIXE WebProcessProxy should not retain WebBackForwardListItems forever. 2015-03-27
143210 WebKit JavaScri kling RESO FIXE Logically empty WeakBlocks should not pin down their MarkedBlocks indefinitely. 2015-04-04
143339 WebKit New Bugs kling RESO FIXE [WK2] Storage areas should get torn down when there are no remaining references to them. 2020-02-03
143426 WebKit JavaScri kling RESO FIXE URI encoding/escaping should use efficient string building instead of calling snprintf(). 2015-04-05
143638 WebKit JavaScri kling RESO FIXE Don't segregate heap objects based on Structure immortality. 2015-04-13
143802 WebKit JavaScri kling RESO FIXE Make MarkedBlock and WeakBlock 4x smaller. 2015-04-16
144080 WebKit Layout a kling RESO WONT [iOS] Disable live rendering during zoom on low-memory devices. 2015-09-02
144175 WebKit WebCore kling RESO FIXE theverge.com burning 100% CPU on iPad (due to window.screenX/Y) 2015-04-24
144286 WebKit JavaScri kling RESO FIXE RegExp matches arrays should use contiguous indexing. 2015-04-27
144317 WebKit JavaScri kling RESO FIXE DFG+FTL should generate efficient code for branching on a string's boolean value. 2015-04-28
144530 WebKit Layout a kling RESO FIXE Style recalc always causes detach from shared StyleRareNonInheritedData. 2015-05-02
144585 WebKit JavaScri kling RESO FIXE Optimize WeakBlock's "reap" and "visit" operations. 2015-05-05
144586 WebKit JavaScri kling RESO FIXE Make ExecState::vm() branchless in release builds. 2015-05-04
144616 WebKit WebCore kling RESO FIXE Record the reference time when Performance is constructed. 2015-05-05
144676 WebKit JavaScri kling RESO FIXE Don't allocate a StringImpl for every Number JSValue in JSON.stringify(). 2015-05-06
144721 WebKit JavaScri kling RESO FIXE Worker threads leak WeakBlocks (as seen on leaks bot) 2015-05-07
144731 WebKit JavaScri kling RESO FIXE Special-case Int32 values in JSON.stringify(). 2015-05-07
144754 WebKit JavaScri kling RESO FIXE Optimize serialization of quoted JSON strings. 2015-05-09
144759 WebKit JavaScri kling RESO WONT MapDataImpl::add() shouldn't do the same hash lookup twice. 2022-02-27
144800 WebKit JavaScri kling RESO FIXE Micro-optimize JSON serialization of string primitives. 2015-05-08
144847 WebKit JavaScri kling RESO FIXE JSON.stringify shouldn't use generic get() to access Array.length 2015-05-11
144874 WebKit JavaScri kling RESO FIXE PropertyNameArray should use a Vector when there are few entries. 2015-05-11
144985 WebKit JavaScri kling RESO FIXE String.prototype.split() should create efficient substrings. 2015-05-14
145131 WebKit JavaScri kling RESO FIXE Give JSString a StringView getter and start using it. 2015-05-19
145213 WebKit JavaScri kling RESO FIXE Eden collections should extend the IncrementalSweeper work list, not replace it. 2015-05-20
145224 WebKit JavaScri kling RESO FIXE Remove unused MarkedBlock::m_rememberedSet. 2022-02-27
145302 WebKit JavaScri kling RESO DUPL [JSC] Speed up new array construction in Array.prototype.splice(). 2015-05-26
145303 WebKit JavaScri kling RESO FIXE [JSC] Speed up new array construction in Array.prototype.splice(). 2015-05-26
145351 WebKit JavaScri kling RESO FIXE String.prototype.indexOf() should use StringView. 2015-06-09
145352 WebKit JavaScri kling RESO FIXE String.prototype.charAt() should use StringView. 2015-12-15
145353 WebKit JavaScri kling RESO FIXE String.prototype.charCodeAt() should use StringView. 2015-05-26
145389 WebKit Layout a kling RESO FIXE CSS animations in filling-forwards state shouldn't force compositing. 2015-06-01
145427 WebKit JavaScri kling RESO FIXE jsSubstring() should support creating substrings from substrings. 2015-06-23
145443 WebKit Layout a kling RESO FIXE GraphicsLayerCA should start out with m_intersectsCoverageRect=false 2015-05-28
145481 WebKit Layout a kling RESO FIXE [iOS] Reduce tiling coverage when doing a pure pinch zoom with no panning. 2015-05-29
145487 WebKit Layout a kling RESO FIXE [iOS] When bouncing back from max pinch zoom scale, scaleChangeRate should be 0. 2015-05-29
145494 WebKit Layout a kling RESO FIXE [iOS] Tiling coverage sometimes inflated by outdated scale factor. 2015-05-31
145782 WebKit JavaScri kling RESO FIXE [JSC] InlineCallFrame::arguments should be sized-to-fit. 2015-06-10
145784 WebKit JavaScri kling RESO FIXE [JSC] CodeBlock::m_constantRegisters should be sized-to-fit. 2015-06-09
145786 WebKit JavaScri kling RESO FIXE [JSC] Polymorphic{Get,Put}ByIdList::addAccess() should optimize for size, not speed. 2015-06-09
145787 WebKit JavaScri kling RESO FIXE [JSC] JSPropertyNameEnumerator's property name vector should be sized-to-fit. 2015-06-09
145803 WebKit JavaScri kling RESO FIXE [JSC] JSString::getIndex() should avoid reifying substrings. 2015-06-09
145817 WebKit Canvas kling RESO FIXE GraphicsContext state stack wasting lots of memory when empty. 2015-06-09
146006 WebKit JavaScri kling RESO FIXE [JSC] Pre-bake final Structure for RegExp matches arrays. 2015-06-16
146051 WebKit JavaScri kling RESO FIXE [JSC] jsSubstring() should have a fast path for 0..baseLength "substrings." 2015-06-17
146069 WebKit Web Temp kling RESO FIXE SegmentedVector should waste less memory. 2015-06-17
146252 WebKit Layout a kling RESO FIXE Should reduce tile coverage for the first paint after a tab switch 2015-06-23
146368 WebKit Media kling RESO DUPL [iOS] Drop buffered data in paused media elements on memory pressure. 2015-06-26
146369 WebKit Media kling RESO FIXE [iOS] Drop buffered data in paused media elements on memory pressure. 2015-07-03
146410 WebKit Media kling RESO FIXE [iOS] Pausing a media element should discard buffered data immediately if under memory pressure. 2015-06-29
146479 WebKit Layout a kling RESO DUPL [iOS] Ignore viewport rect changes during zoom bouncing. 2015-07-05
146480 WebKit Layout a kling RESO FIXE [iOS] Ignore viewport rect changes during zoom bouncing. 2015-07-05
146735 WebKit Forms kling RESO FIXE [iOS] Scrolling is laggy when the keyboard is up and a form element is focused. 2015-07-08
146937 WebKit History kling RESO FIXE Don't persist history item tree for subframes across reloads. 2015-07-14
147349 WebKit Page Loa kling RESO FIXE WebsiteDataStore should clean up its storage in the network process when destroyed. 2015-07-27
147403 WebKit WebCore kling RESO FIXE web process continually eating memory on simple, shared Google Docs spreadsheet 2016-09-09
148359 WebKit JavaScri kling RESO FIXE [JSC] Static hash tables should be 100% compile-time constant. 2015-08-22
148478 WebKit JavaScri kling RESO FIXE [JSC] StructureTransitionTable should eagerly deallocate single-transition WeakImpls. 2015-08-26
149463 WebKit Page Loa kling RESO FIXE [WK2][NetworkCache] New entry bodies remain in dirty memory after being written to disk. 2015-09-22
149874 WebKit Frames kling RESO FIXE Generated frame tree names should be kept reasonably long. 2015-10-08
149934 WebKit WebCore kling RESO FIXE SerializedScriptValue should use a compact encoding for 8-bit strings. 2015-10-10
149998 WebKit JavaScri kling RESO DUPL Reduce pointless malloc traffic in CodeBlock construction. 2015-10-10
149999 WebKit JavaScri kling RESO FIXE Reduce pointless malloc traffic in CodeBlock construction. 2015-10-10
150003 WebKit CSS kling RESO FIXE Reduce pointless malloc traffic in ElementRuleCollector. 2015-10-10
150034 WebKit Web Temp kling RESO FIXE "A + B" with strings shouldn't copy if A or B is empty. 2015-10-14
150057 WebKit Layout a kling RESO FIXE Have TransformState::mappedSecondaryQuad() return an Optional<FloatQuad>. 2015-10-12
150244 WebKit JavaScri kling RESO FIXE Remove unused StructureRareData::m_cachedGenericPropertyNameEnumerator. 2015-10-16
150599 WebKit WebCore kling RESO FIXE Add a debug overlay with information about web process resource usage. 2015-10-31
152021 WebKit WebCore kling RESO FIXE [iOS] ResourceUsageOverlay should work on iOS. 2015-12-09
152203 WebKit WebCore kling RESO FIXE CachedScript could have a copy-free path for all-ASCII scripts. 2015-12-13
152362 WebKit WebCore kling RESO FIXE Give kernel VM some hints about non-live memory-cached resources. 2015-12-16
152501 WebKit JavaScri kling RESO FIXE Pack RegisterAtOffset harder. 2016-01-20
152902 WebKit Web Temp kling RESO FIXE Use NeverDestroyed instead of DEPRECATED_DEFINE_STATIC_LOCAL 2016-01-13
152960 WebKit CSS kling RESO FIXE CSSValuePool should use nonfragmented storage for eternal caches. 2016-01-11
153325 WebKit Images kling RESO FIXE CGImageSource sometimes retains temporary SharedBuffer data indefinitely, doubling memory cost. 2016-01-21
153399 WebKit JavaScri kling RESO FIXE Reduce number of Structures created at startup 2016-01-25
153448 WebKit JavaScri kling RESO FIXE MarkedSpace should have more precise allocators. 2016-01-27
153640 WebKit JavaScri kling RESO FIXE Shrink CodeBlock! 2016-01-29
153682 WebKit JavaScri kling RESO FIXE Shrink Heap::m_executables after cleaning it. 2016-01-30
153851 WebKit WebCore kling RESO FIXE [iOS] Throw away linked code when navigating to a new page. 2016-06-17
154161 WebKit WebCore kling RESO FIXE Don't invalidate the FontCache on memory pressure. 2016-02-12
154172 WebKit Images kling RESO FIXE [Mac] BitmapImage::decodedDataIsPurgeable() is telling lies and causing massive memory usage. 2016-02-12
154176 WebKit Images kling RESO FIXE Throw out all live resource decoded data on memory pressure / suspension. 2016-02-12
154238 WebKit CSS kling RESO FIXE Drop StyleResolver and SelectorQueryCache when entering PageCache. 2016-10-20
154343 WebKit Text kling RESO FIXE [iOS] Purge GraphicsServices font cache on memory warning. 2017-01-12
154374 WebKit Layout a kling RESO FIXE Reduce tiling coverage immediately when memory pressure hits. 2016-02-18
154693 WebKit WebCore kling RESO FIXE Don't clear the weak JSString cache on memory pressure. 2016-02-25
154712 WebKit WebCore kling RESO FIXE [iOS] Enable PageCache backing store clearing optimization for WebKit2. 2016-02-25
154776 WebKit Images kling RESO FIXE [iOS] Discard decoded image data on top-level navigation. 2016-02-27
154797 WebKit JavaScri kling RESO FIXE Shrink UnlinkedCodeBlock a bit. 2016-02-28
154986 WebKit DOM kling RESO FIXE Drop DocumentSharedObjectPool immediately when going into PageCache. 2016-03-24
155015 WebKit WebCore kling RESO FIXE [iOS] Throw away compiled RegExp code when navigating to a new page. 2016-03-04
155087 WebKit WebCore kling RESO FIXE Reduce page cache capacity from 3 to 2. 2016-03-07
155106 WebKit Layout a kling RESO FIXE Make RenderStyle copy-on-write a bit less. 2016-03-07
155154 WebKit JavaScri kling RESO FIXE WeakBlock::visit() should check for a WeakHandleOwner before consulting mark bits. 2016-03-08
155167 WebKit Images kling RESO FIXE ImageDocuments leak their world. 2016-03-09
158158 WebKit DOM kling RESO FIXE Document abandons its EventTargetData. 2016-05-27
158186 WebKit JavaScri kling RESO FIXE JSGlobalLexicalEnvironment leaks SegmentedVector due to lack of destructor. 2016-05-28
158260 WebKit CSS kling RESO FIXE Use inline capacity for StylePropertyShorthand Vectors. 2016-06-01
158336 WebKit JavaScri kling RESO FIXE Eliminate two large sources of temporary StringImpl objects. 2016-06-03
158356 WebKit CSS kling RESO FIXE Give RuleFeatures::classesMatchingAncestors some inline capacity. 2016-06-05
158444 WebKit JavaScri kling RESO FIXE Don't reportAbandonedObjectGraph() after throwing out linked code or RegExps. 2016-06-06
158506 WebKit WebCore kling RESO FIXE CachedScript should avoid recomputing its hash multiple times. 2016-06-08
158847 WebKit WebCore kling RESO INVA [iOS] Limit the "jettison expensive objects on navigation" mechanism when navigating repeatedly. 2016-06-16
159363 WebKit WebCore kling RESO FIXE Add early return when processing content extensions if there aren't any. 2016-07-01
159688 WebKit WebCore kling RESO FIXE [Cocoa] Simulated memory warning doesn't trigger libcache purge. 2016-07-13
160419 WebKit CSS kling RESO FIXE Shrink MediaQuerySets to fit after parsing. 2016-08-01
160646 WebKit CSS kling RESO FIXE DocumentRuleSets::collectFeatures() should shrink-to-fit. 2016-08-07
163347 WebKit WebCore kling RESO FIXE Make Document::existingAXObjectCache() fast with accessibility disabled. 2016-10-12
164345 WebKit JavaScri kling RESO FIXE MarkedSpace should have specialized size classes for popular engine objects. 2016-11-02
165043 WebKit WebCore kling RESO FIXE MemoryPressureHandler should only trigger synchronous GC on iOS 2016-11-25
165375 WebKit WebCore kling RESO FIXE [Cocoa] Add some memory usage related information to sysdiagnose state dumps 2016-12-06
166639 WebKit Media kling RESO FIXE Discard media controls JS/CSS caches under memory pressure. 2017-01-02
166652 WebKit Text kling RESO FIXE Placeholder style mechanism leaks CSSFontSelector for first Document styled. 2017-01-03
166815 WebKit JavaScri kling RESO FIXE Inject MarkedSpace size classes for a few more high-volume objects. 2017-01-09
166875 WebKit JavaScri kling RESO FIXE Crash when WebCore's GC heap grows way too large. 2017-01-11
167141 WebKit WebCore kling RESO FIXE WidthCache should be off while under memory pressure. 2017-01-17
167213 WebKit Layout a kling RESO FIXE Don't generate extra scrolling tiles for non-visible pages. 2017-04-10
167387 WebKit Web Temp kling RESO FIXE Implement the alwaysRunsAtBackgroundPriority WK2 setting using thread QoS 2017-02-03
167491 WebKit WebCore kling RESO FIXE [Mac] In-process memory pressure monitor for WebContent processes. 2017-08-03
167543 WebKit CSS kling RESO FIXE REGRESSION(r196383): Automatic shrink-to-fit of RuleSet no longer works. 2017-01-28
167580 WebKit WebKit A kling RESO FIXE [macOS] WebHTMLView has an internal retain cycle with its flagsChangedEventMonitor. 2017-01-30
167968 WebKit Canvas kling RESO FIXE Disallow accelerated rendering for ginormous 2D canvases. 2022-02-05
169990 WebKit Web Temp kling RESO FIXE Let MemoryPressureHandler track whether the process is active or inactive. 2018-07-20
170082 WebKit Layout a kling RESO FIXE [Mac] Remove backing store for layers that are outside the viewport 2017-06-01
170515 WebKit Web Temp kling RESO FIXE Kill any WebContent process using over 16 GB of memory. 2017-04-06
170522 WebKit WebCore kling RESO FIXE Stop forcing CA commit when memory pressure changes. 2017-04-06
170574 WebKit Web Temp kling RESO FIXE Inaudible background tabs should become eligible for memory kill after 8 minutes 2017-04-06
172032 WebKit Media kling RESO FIXE MediaResourceLoader shouldn't keep its HTMLMediaElement alive. 2017-05-12
172035 WebKit WebCore kling RESO FIXE Memory pressure response should only do sync bmalloc scavenge in sync mode. 2017-05-12
172037 WebKit Web Temp kling RESO FIXE More aggressive memory kill limits. 2017-05-12
172088 WebKit WebKit2 kling RESO FIXE Always reset the assisted node when the main frame commits a new load. 2017-05-14
173604 WebKit WebCore kling RESO FIXE Remove no-op calls to purge SQLite caches on memory pressure. 2017-06-20
173616 WebKit WebCore kling RESO FIXE [iOS] Ensure that GraphicsServices is initialized before calling GSFontPurgeFontCache(). 2017-06-21
173674 WebKit Web Temp kling RESO FIXE Increase memory kill limits for WebContent processes that manage multiple tabs. 2017-06-27
175179 WebKit Page Loa kling RESO FIXE NetworkLoad should always invoke its redirect completion handler 2017-08-22
99990 WebKit WebCore ktf.kim RESO FIXE sCurrentPaintTimeStamp is not initialized when FrameView::paintContents returns in the middle 2012-11-02
128161 WebKit JavaScri mhahnenberg RESO WORK REGRESSION(GenGC): 3.03% slowdown on DoYouEvenBench. 2014-07-04
16448 WebKit JavaScri mrowe RESO FIXE [GTK] Celtic Kane JavaScript performance on Array test is slow relative to Mac 2007-12-16
88424 WebKit Images mtutunik RESO FIXE Optimization in image decoding 2012-12-03
66684 WebKit New Bugs nduca RESO FIXE Implement high-resolution time via window.performance.now() 2012-04-27
47070 WebKit Layout a noam RESO FIXE [Texmap] [Qt] Texture mapper initial implementation 2011-07-14
50270 WebKit JavaScri norbert.leser RESO WONT [Qt] [Symbian] Reintroduce compiler optimizations for JSC 2012-05-21
36357 WebKit WebKit Q ostap73 RESO INVA Browser performance is too slow on N900; therefore, unable to execute stability and performance test 2010-05-07
37470 WebKit Page Loa ostap73 RESO WORK [Qt] Image Decoding Test on huge html page - loads forever 2010-09-22
103693 WebKit Images ostap73 RESO FIXE Remove conversion to/from float and float division from ImageFrame::setRGBA 2012-12-11
256123 WebKit WebKitGT philn RESO FIXE [GStreamer] Constant CPU usage on autoplaying videos, even when out of viewport 2023-05-12
225972 WebKit Web Insp rcaliman RESO FIXE Web Inspector: Styles panel slow to render when inspecting node with many inherited CSS variables 2021-07-08
47320 WebKit WebCore ryuan.choi RESO FIXE [Performance] Only call sendContentResizeNotification when the scrollbar actually did change 2011-07-06
18476 WebKit WebCore staikos RESO WONT Tabing between links is very slow on some pages 2010-03-17
102352 WebKit Layout a tony RESO FIXE Avoid a second layout of flex items in layoutAndPlaceChildren() 2012-12-02
84614 WebKit Page Loa tonyg RESO FIXE Subresources loaded after a reload completes shouldn't be revalidated. 2012-05-16
30293 WebKit WebCore webkit-qt-unassigned RESO FIXE [Qt] performance regressions on loading page after ImageDecoderQt changes 2010-09-23
34208 WebKit New Bugs webkit-qt-unassigned RESO FIXE [Qt] QtWebKit 4.7 performance 2010-07-27
36158 WebKit Platform webkit-qt-unassigned RESO FIXE [Qt] [Performance] GraphicsLayerQt updates the scene too often 2010-03-22
42456 WebKit Layout a webkit-qt-unassigned RESO FIXE [Qt] Path: Avoid creating a new GraphicsContext in strokeContains() and strokeBoundingRect() 2010-07-16
42463 WebKit WebCore webkit-qt-unassigned RESO FIXE [Qt] Avoid QImage::pixel() in getImageData() 2010-07-19
42945 WebKit WebCore webkit-qt-unassigned RESO FIXE [Qt] getImageData(): Single-pass RGB->BGR and un-premultiplication 2019-05-03
43059 WebKit WebCore webkit-qt-unassigned RESO FIXE [Qt] putImageData() optimizations 2010-07-27
43114 WebKit WebCore webkit-qt-unassigned RESO FIXE [Qt] putImageData(): Combine premultiplication and BGR->RGB 2010-07-28
44014 WebKit WebCore webkit-qt-unassigned RESO FIXE [Qt] Path: Fast approximation of stroke bounding rects 2010-08-17
44232 WebKit Text webkit-qt-unassigned RESO FIXE [Qt] Avoid unnecessary string copy in TextCodecQt::decode() 2010-08-19
45923 WebKit Layout a webkit-qt-unassigned RESO FIXE [Qt] Remove unnecessary QPainter::clipPath() call in TransparencyLayer() 2010-09-17
45965 WebKit WebCore webkit-qt-unassigned RESO FIXE [Qt] Don't copy clip path to TransparencyLayer 2010-09-20
46048 WebKit WebCore webkit-qt-unassigned RESO FIXE [Qt] Path: Remove unused member variable 2010-09-18
47460 WebKit Layout a webkit-qt-unassigned RESO FIXE [Qt] Fast-path in Path::clear() for already empty paths 2010-10-09
48211 WebKit Layout a webkit-qt-unassigned RESO FIXE [Qt] ImageBuffer::platformTransformColorSpace is unnecessarily slow 2010-10-24
48624 WebKit Layout a webkit-qt-unassigned RESO FIXE [Qt] GraphicsLayer: Don't notifySyncRequired() more than necessary 2010-10-29
48626 WebKit Layout a webkit-qt-unassigned RESO FIXE [Qt] Make GraphicsContext cheaper to construct 2010-10-29
48736 WebKit WebKit Q webkit-qt-unassigned RESO FIXE [Qt] Short-circuit QWebPage::selectedText() if frame has no selection 2010-10-31
14025 WebKit New Bugs webkit-unassigned RESO FIXE [GDK] Page renders fully, adds a scrollbar, then reflows 2008-01-06
15070 WebKit New Bugs webkit-unassigned RESO FIXE [GTK] Backing store support for faster scrolling 2009-03-01
15704 WebKit New Bugs webkit-unassigned RESO DUPL [GTK] SVG/Cairo hit-testing is very slow 2009-12-30
16028 WebKit Images webkit-unassigned RESO INVA [GTK] Track Mozilla's GIF decoder memory reductions 2012-02-18
16302 WebKit WebKitGT webkit-unassigned RESO FIXE [GTK] Compiler flags for optimization 2013-09-11
18458 WebKit Plug-ins webkit-unassigned RESO WORK very high processor and disk usage on wmv clips 2008-10-02
18755 WebKit WebKitGT webkit-unassigned RESO FIXE http://operationclimatecontrol.co.uk/content/ is insanely slow 2009-09-30
19548 WebKit DOM webkit-unassigned RESO DUPL Too many attempts at test 69 2008-06-16
24468 WebKit Text webkit-unassigned RESO WONT [Qt] Big performance improvement to FontQt.cpp and hence all text drawing and layouting in QtWebKit 2011-03-27
24913 WebKit Plug-ins webkit-unassigned RESO INVA [Qt] NPAPI: Excessive timer usage and high CPU load 2014-02-03
27538 WebKit Images webkit-unassigned RESO FIXE Qt memory consumption on site with many images 2009-10-08
29397 WebKit Layout a webkit-unassigned RESO DUPL [Qt] Improve the scrolling speed in QtWebKit 2009-09-25
29438 WebKit Plug-ins webkit-unassigned RESO INVA [Qt] NPAPI: HBITMAP to QPixmap conversion is slow 2014-01-28
32186 WebKit Layout a webkit-unassigned RESO INVA [Qt] Changing default font from Arial/Times New Roman/fixed to sans-serif, serif, monospace appears to save 400msec on loading 2014-02-03
34489 WebKit Text webkit-unassigned RESO INVA [Qt] Text codec lookup is slow 2010-02-15
34578 WebKit WebKit Q webkit-unassigned RESO WONT [Qt] Rendering semitransparent layers is slow with Qt 2010-02-04
34838 WebKit WebKit Q webkit-unassigned RESO WONT [Qt] Avoid painting and layout while loading a page 2011-01-12
35843 WebKit New Bugs webkit-unassigned RESO FIXE REGRESSION(r55035): string-base64 20x slower (in-browser only) 2010-03-15
36080 WebKit JavaScri webkit-unassigned RESO FIXE Performance degradations when using large javascript files 2010-08-06
37868 WebKit Web Insp webkit-unassigned RESO WONT Add animation support to web-inspector Timeline 2010-04-21
37911 WebKit Page Loa webkit-unassigned RESO INVA [Qt] AOL site takes up to 20 seconds on the device 2014-02-03
40159 WebKit Layout a webkit-unassigned RESO DUPL [Qt] Decode images in a separate thread to improve UI responsiveness 2012-06-14
40332 WebKit Text webkit-unassigned RESO FIXE [Qt] Text breaking is slow: enable ICU as an opt-in 2010-10-14
40536 WebKit WebGL webkit-unassigned RESO FIXE GraphicsContext3D.h in the Qt port includes too many unnecessary files 2010-06-13
40884 WebKit WebGL webkit-unassigned RESO FIXE [Qt] When we render WebGL offscreen, color conversion cost a lot of CPU cycles 2011-03-24
41019 WebKit WebCore webkit-unassigned RESO FIXE Canvas: Remember verified clean origins for drawImage() 2010-06-25
41353 WebKit Layout a webkit-unassigned RESO INVA [Qt] CSS masks on images should not cause QPixmap "texture upload" 2012-07-11
42267 WebKit WebCore webkit-unassigned RESO FIXE Canvas: Make assigning the same fillStyle or strokeStyle a fast no-op 2010-07-14
42272 WebKit WebCore webkit-unassigned RESO FIXE Canvas: Fast-path for assigning the same color string as before to fillStyle or strokeStyle 2010-07-14
42300 WebKit WebCore webkit-unassigned RESO FIXE Canvas: Don't add shadow rect to dirty region when shadow alpha is 0 2010-07-14
42305 WebKit WebCore webkit-unassigned RESO FIXE Add functions to extract individual RGBA32 components 2010-07-14
42495 WebKit WebCore webkit-unassigned RESO WONT Canvas: Re-use existing CanvasStyle objects for color strings 2010-07-17
42965 WebKit CSS webkit-unassigned RESO FIXE CSS: Add fast-path for rgba() color parsing 2010-08-24
43010 WebKit Tools / webkit-unassigned RESO FIXE [Qt] Qt test browser: enable a QGLWidget viewport with a command line argument 2010-08-22
43011 WebKit WebKit Q webkit-unassigned RESO DUPL [Qt] Edits to bridge documentation 2010-07-29
43718 WebKit WebCore webkit-unassigned RESO FIXE Canvas: Fast-path for setting the already set color with setStrokeColor() and setFillColor() 2010-08-09
44037 WebKit JavaScri webkit-unassigned RESO FIXE JSC: Move the static_cast into to(U)Int32 fast case 2010-08-19
44107 WebKit CSS webkit-unassigned RESO FIXE CSS: Make rgb() and rgba() fast paths case-insensitive 2010-08-18
46044 WebKit Layout a webkit-unassigned RESO FIXE Gradient: Pre-reserve space for 2 color stops 2010-09-18
46045 WebKit Layout a webkit-unassigned RESO FIXE Gradient: Fast-path for the ideal case in sortStopsIfNecessary() 2010-09-18
46066 WebKit SVG webkit-unassigned RESO FIXE SVG: Make SVGLength's stringToLengthType() stricter and faster 2010-09-24
46283 WebKit Layout a webkit-unassigned RESO DUPL Allow CSS animations to run at more than 40FPS 2012-07-20
46537 WebKit SVG webkit-unassigned RESO FIXE SVG: Avoid calling pow() in genericParseNumber() unless necessary 2010-09-26
48738 WebKit Layout a webkit-unassigned RESO FIXE GraphicsContext: Don't do full save/restore when painting with low quality scaling 2010-11-04
50070 WebKit Layout a webkit-unassigned RESO FIXE Don't do GraphicsContext save/restore just to preserve the CompositeOperator 2010-12-10
50527 WebKit Layout a webkit-unassigned RESO FIXE [Qt] Background image rendering is slow 2011-01-17
51653 WebKit HTML Edi webkit-unassigned RESO INVA Text selection code shouldn't be invoked when -webkit-user-select is none 2014-02-03
54365 WebKit Layout a webkit-unassigned RESO FIXE GraphicsContext: Add clip(IntRect) overload for Qt 2011-02-14
60979 WebKit SVG webkit-unassigned RESO FIXE SVGRootInlineBox triggers calculateBoundaries twice in layout 2011-05-20
68353 WebKit Platform webkit-unassigned RESO INVA [Qt] Apply ParallelJobs for ImageBuffer::platformTransformColorSpace method 2011-11-15
76877 WebKit Layout a webkit-unassigned RESO FIXE [Qt][WK2] Qt's cross-process AC copies images excessively when updating tiles. 2012-01-24
84914 WebKit New Bugs webkit-unassigned RESO WONT [Chromium] Need to expose TimeTicks::HighResNow() 2013-04-15
86165 WebKit WebCore webkit-unassigned RESO FIXE HTML parser should yield more to improve perceived page load time 2012-06-23
90748 WebKit Images webkit-unassigned RESO FIXE Introduce a build flag for low quality JPEG images 2012-07-08
106304 WebKit WebKit Q webkit-unassigned RESO INVA [Qt] High memory consumption and memory growth in Qt5's WebKit compared to Qt4.8 2014-01-28
109354 WebKit Text webkit-unassigned RESO FIXE RenderText::isAllCollapsibleWhitespace() shouldn't upconvert string to 16-bit. 2013-02-11
120519 WebKit JavaScri webkit-unassigned RESO INVA Poor performance for looping through ImageData 2013-08-30
138226 WebKit WebCore webkit-unassigned RESO WONT XSSAuditor memory leak when posting large form 2021-09-21
190802 WebKit Tools / webkit-unassigned RESO WONT Updated SpeedoMeter InfernoJS to stable version (v6.0.3) 2018-10-28
251017 WebKit WebKitGT webkit-unassigned RESO FIXE [GStreamer] VA-API (GstVA) hardware-accelerated video decoding playback above 1080p resolution on YouTube in VP9 is very slow and stutters 2023-03-16
251336 WebKit WebKitGT webkit-unassigned RESO MOVE [SOUP] Very slow to load the CNN or Globe and Mail websites 2024-02-28
261984 WebKit HTML Edi webkit-unassigned RESO FIXE [Performance Optimization] Skip non-text SVG elements in Most{For/Back}wardCaretPosition 2023-09-30
37148 WebKit Layout a benjamin RESO FIXE [Qt] Rendering artifacts with copy scrolling with fixed position elements inside iframe 2010-06-28
43416 WebKit Platform hausmann RESO FIXE [Qt] Implement GraphicsContext::clipOut more efficiently 2010-08-18
31811 WebKit WebCore jens RESO FIXE Accidental calls to EventNames() instead of eventNames() waste CPU cycles 2009-11-23
36102 WebKit New Bugs koivisto RESO FIXE [Qt] Scaling control API for tiled backing store 2010-03-19
29429 WebKit Layout a webkit-qt-unassigned RESO WORK [Qt] QWebView animation gif performance problem in Qt 4.5.0-rc1 2010-05-04
38459 WebKit New Bugs webkit-qt-unassigned RESO INVA [Qt] Load time is very slow for live Websites when using QtWebkit week 16 2010-07-17
32420 WebKit New Bugs webkit-unassigned RESO INVA [Qt] UI Refresh rate: Bubble mark test - low fps in potrait mode 2010-02-28
35777 WebKit New Bugs webkit-unassigned RESO DUPL High cpu usage when displaying certain pages 2010-04-30
35833 WebKit New Bugs benjamin RESO INVA Clean IntRect 2010-03-10
31719 WebKit Page Loa hausmann CLOS FIXE [Qt] Loading of large page can take up to 10 seconds 2010-05-08
35393 WebKit Platform noam CLOS FIXE [Qt] GraphicsLayer: performance optimizations 2010-04-20
34350 WebKit JavaScri s.mathur CLOS FIXE [Symbian] More efficient aligned memory allocation for JSC Collector 2010-05-07
33150 WebKit Layout a webkit-qt-unassigned CLOS FIXE Do not render the full frame when there is some elements with fixed positioning 2010-06-28
37934 WebKit Tools / webkit-unassigned CLOS FIXE [Qt] QtLauncher: make FPS measurement accurate 2024-09-25
38062 WebKit Platform webkit-unassigned CLOS FIXE [Qt] HTTP pipelining efficiency increase 2010-04-26
40535 WebKit Layout a webkit-unassigned CLOS FIXE [Qt] GraphicsLayer: recaching images creates an unnecessary deep copy 2010-06-13
40910 WebKit Images webkit-unassigned CLOS FIXE [Qt] Avoid unnecessary image conversion in RGBA32Buffer::zeroFill() 2011-04-19
54166 WebKit SVG webkit-unassigned CLOS WONT SVG should be built into a separate library and soft-linked into WebCore 2013-02-25
33875 WebKit WebKit Q zecke CLOS FIXE [Qt] QWebPage::userAgentForUrl is terrible API 2010-05-20
443 bugs found.
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