bugzilla-data-low.json

{"bugs":[{"op_sys":"Android","keywords":["perf:pageload"],"severity":"S3","component":"Performance","summary":"Delayed image loading on low end ARM devices","priority":"P1","status":"ASSIGNED","id":1522282,"creation_time":"2019-01-23T21:52:44Z","last_change_time":"2023-02-22T21:45:14Z"},{"component":"Graphics","summary":"Investigate merging shader cache files","op_sys":"Unspecified","keywords":["perf:startup"],"severity":"S3","id":1631949,"creation_time":"2020-04-21T20:52:29Z","last_change_time":"2022-10-12T00:08:45Z","priority":"P3","status":"ASSIGNED"},{"priority":"P3","status":"ASSIGNED","id":1845775,"creation_time":"2023-07-27T16:40:28Z","last_change_time":"2024-12-12T23:01:08Z","op_sys":"Unspecified","keywords":["webcompat:blocked","webcompat:platform-bug","webcompat:site-report"],"severity":"S2","summary":"Google blog page loads very slowly and often fails to fully load","component":"JavaScript Engine"},{"severity":"S3","op_sys":"Windows Vista","keywords":["blocked-ux","perf"],"summary":"Poor performance using bookmarks menu with large amounts of bookmarks.","component":"Bookmarks & History","status":"NEW","priority":"P3","last_change_time":"2023-05-16T02:23:47Z","creation_time":"2009-04-01T20:00:41Z","id":486378},{"status":"NEW","priority":"P3","last_change_time":"2024-03-22T08:26:57Z","creation_time":"2009-04-29T22:35:30Z","id":490714,"severity":"N/A","op_sys":"All","keywords":["main-thread-io","meta","perf","perf:frontend","perf:responsiveness"],"summary":"[meta] Implement an Asynchronous API for opening container query nodes","component":"Places"},{"status":"NEW","priority":"--","creation_time":"2010-06-29T14:36:04Z","last_change_time":"2022-10-10T22:59:55Z","id":575614,"severity":"S3","keywords":["perf","perf:responsiveness","testcase"],"op_sys":"All","summary":"{inc} Resizing window is slow for long list with multicol (from \"-moz-column-count: 3\" or \"column-width: 20em;\")","component":"Layout: Columns"},{"summary":"Very slow chrome to content DOM access","component":"XPConnect","keywords":["perf","perf:pageload"],"op_sys":"macOS","severity":"S3","id":613498,"last_change_time":"2024-12-09T16:19:44Z","creation_time":"2010-11-19T15:34:28Z","priority":"--","status":"NEW"},{"severity":"S3","keywords":["perf","perf:resource-use"],"op_sys":"Linux","summary":"throttle animation in completely obscured windows (virtual desktop, minimised, hidden behind other fullscreened windows)","component":"Widget","status":"NEW","priority":"P3","creation_time":"2011-03-31T18:37:55Z","last_change_time":"2022-10-10T23:24:13Z","id":646937},{"summary":"Repeated calls to location.hash = \"#foo\" cause large amounts of disk activity","component":"Places","severity":"S3","op_sys":"All","keywords":["perf","perf:responsiveness"],"creation_time":"2011-06-02T18:09:59Z","last_change_time":"2023-12-04T16:12:25Z","id":661590,"status":"NEW","priority":"P3"},{"status":"NEW","priority":"--","last_change_time":"2024-04-08T16:58:41Z","creation_time":"2011-12-19T09:05:20Z","id":711924,"severity":"S3","op_sys":"All","keywords":["perf","perf:resource-use"],"summary":"Compositing/present still hapens when the only changing parts are out of the viewport","component":"Graphics: WebRender"},{"creation_time":"2012-06-03T03:18:54Z","last_change_time":"2024-04-05T11:37:58Z","id":760888,"status":"NEW","priority":"--","summary":"IE10 Test Drive: ParticleAcceleration Canvas 2D demo is slow","component":"Graphics: Canvas2D","severity":"S3","op_sys":"All","keywords":["perf"]},{"id":803709,"creation_time":"2012-10-19T21:25:22Z","last_change_time":"2023-06-05T16:31:57Z","priority":"P3","status":"NEW","component":"Networking","summary":"We appear to be copying large data URIs over and over in nsSimpleURI.","keywords":["perf:resource-use"],"op_sys":"All","severity":"S3"},{"component":"PDF Viewer","summary":"Processing http://lib.tkk.fi/Dipl/2002/urn007413.pdf is slow, and its text layer is all messed up","keywords":["perf:responsiveness"],"op_sys":"Linux","severity":"S3","id":810214,"last_change_time":"2023-06-23T03:10:06Z","creation_time":"2012-11-09T08:29:30Z","priority":"P3","status":"NEW"},{"severity":"S3","keywords":["perf","perf:responsiveness"],"op_sys":"Windows 7","component":"CSS Parsing and Computation","summary":"janky Scrolling on smartsheet.com Sheets","status":"NEW","priority":"--","last_change_time":"2023-03-01T12:04:23Z","creation_time":"2012-12-14T13:46:12Z","id":821693},{"status":"NEW","priority":"--","last_change_time":"2022-11-24T06:34:31Z","creation_time":"2013-01-07T19:06:03Z","id":827440,"severity":"S3","keywords":["perf"],"op_sys":"Windows 7","component":"Graphics: ImageLib","summary":"nsIconChannel::AsyncOpen can block"},{"creation_time":"2013-01-08T19:17:33Z","last_change_time":"2022-10-29T12:12:42Z","id":827937,"status":"NEW","priority":"--","summary":"Opening huge mercurial long commit page freezing Firefox","component":"Layout","severity":"S3","keywords":["perf"],"op_sys":"Windows 8"},{"id":830504,"creation_time":"2013-01-14T22:07:19Z","last_change_time":"2024-08-20T19:28:43Z","priority":"P3","status":"NEW","component":"SQLite and Embedded Database Bindings","summary":"Firefox should abort on tryserver when executing SQL on the main thread","keywords":["perf:frontend","perf:responsiveness"],"op_sys":"All","severity":"S3"},{"op_sys":"All","keywords":["main-thread-io","perf:frontend"],"severity":"S3","summary":"Use IOUtils for gLastOpenDirectory","component":"General","priority":"--","status":"NEW","id":837989,"creation_time":"2013-02-05T02:16:08Z","last_change_time":"2023-05-16T02:22:53Z"},{"severity":"S3","op_sys":"macOS","keywords":["main-thread-io","perf:responsiveness"],"component":"Networking: File","summary":"nsFileChannel::nsFileChannel causes expensive lstats","status":"NEW","priority":"P3","last_change_time":"2024-03-27T16:10:09Z","creation_time":"2013-04-16T15:29:21Z","id":862383},{"priority":"P3","status":"NEW","id":890712,"last_change_time":"2024-04-01T16:26:36Z","creation_time":"2013-07-07T15:57:11Z","keywords":["main-thread-io","perf","perf:frontend"],"op_sys":"All","severity":"S3","summary":"nsIOService::NewFileURI is doing main thread IO and causes jank","component":"Networking"},{"id":914595,"last_change_time":"2023-07-27T07:06:57Z","creation_time":"2013-09-10T12:49:00Z","priority":"--","status":"NEW","component":"Layout","summary":"Polygon.com page scrolling becomes extremely slow after a while","keywords":["perf"],"op_sys":"All","severity":"S3"},{"creation_time":"2013-09-17T02:34:03Z","last_change_time":"2022-10-11T01:07:35Z","id":917090,"status":"NEW","priority":"--","summary":"Visibility state is not updated when the browser window is obscured or on another workspace","component":"General","severity":"S3","op_sys":"All","keywords":["perf:resource-use"]},{"summary":"Optimize GetRootPresContext() to avoid going through the viewmanager / view tree","component":"Layout","severity":"S3","keywords":["perf"],"op_sys":"Linux","creation_time":"2014-03-18T00:14:52Z","last_change_time":"2022-10-24T12:16:02Z","id":984690,"status":"NEW","priority":"--"},{"component":"Toolbars and Customization","summary":"Preload panel contents on hover of toolbar button","severity":"S3","op_sys":"All","keywords":["perf:frontend"],"last_change_time":"2023-07-19T04:52:40Z","creation_time":"2014-06-10T10:02:00Z","id":1023152,"status":"NEW","priority":"--"},{"severity":"S3","keywords":["perf:frontend"],"op_sys":"All","summary":"Make bookmarks toolbar view use async openContainer","component":"Places","status":"NEW","priority":"P3","last_change_time":"2023-05-11T18:04:55Z","creation_time":"2014-08-02T09:50:40Z","id":1047817},{"priority":"--","status":"NEW","id":1097376,"creation_time":"2014-11-12T00:22:19Z","last_change_time":"2022-10-11T15:57:30Z","keywords":["perf"],"op_sys":"Android","severity":"S3","summary":"Poor performance in Ember app Discourse","component":"JavaScript Engine"},{"status":"NEW","priority":"P5","last_change_time":"2024-09-23T19:34:25Z","creation_time":"2015-01-06T01:55:10Z","id":1118086,"severity":"S3","keywords":["multiprocess","perf","perf:responsiveness","testcase"],"op_sys":"All","component":"Layout: Form Controls","summary":"[e10s] There is a delay for about 1 seconds to display <select> drop-down list with 1600+ items"},{"creation_time":"2015-04-15T23:32:29Z","last_change_time":"2023-10-11T11:00:04Z","id":1154987,"status":"NEW","priority":"--","summary":"[Meta] Move JS parsing off of main thread and enable incremental parsing","component":"JavaScript Engine","severity":"S3","op_sys":"Windows 8.1","keywords":["meta","perf"]},{"keywords":["perf:animation","perf:responsiveness","reproducible"],"op_sys":"All","severity":"S3","summary":"Very laggy panning and zooming of map on Orbis website","component":"Graphics: WebRender","priority":"--","status":"NEW","id":1155307,"creation_time":"2015-04-16T18:22:07Z","last_change_time":"2024-04-02T23:00:44Z"},{"creation_time":"2015-05-07T18:46:57Z","last_change_time":"2023-08-29T16:48:48Z","id":1162665,"status":"NEW","priority":"--","summary":"ES6 Map performance for large numbers of elements is deficient","component":"JavaScript: GC","severity":"S3","op_sys":"Unspecified","keywords":[]},{"op_sys":"Unspecified","keywords":["perf:responsiveness"],"severity":"S3","component":"DOM: Animation","summary":"2D canvas+HTML/CSS animation demo site broken on Firefox, works great on Chrome","priority":"--","status":"NEW","id":1213513,"last_change_time":"2023-02-19T05:13:03Z","creation_time":"2015-10-10T00:31:34Z"},{"component":"Layout","summary":"On/Off opacity changes shouldn't create active layers","severity":"S3","keywords":[],"op_sys":"All","creation_time":"2015-10-23T09:20:20Z","last_change_time":"2024-09-22T12:08:26Z","id":1217748,"status":"NEW","priority":"--"},{"component":"JavaScript Engine","summary":"Block JavaScript parser thread when source code characters are not available","op_sys":"Unspecified","keywords":["perf"],"severity":"S3","id":1222086,"creation_time":"2015-11-05T17:44:28Z","last_change_time":"2022-10-11T17:46:56Z","priority":"--","status":"NEW"},{"severity":"S3","keywords":["perf","regression","testcase"],"op_sys":"Unspecified","component":"Graphics: CanvasWebGL","summary":"Low performance of texImage2D with canvas2d and WebGL","status":"NEW","priority":"P3","creation_time":"2016-02-06T17:43:25Z","last_change_time":"2024-05-17T08:40:26Z","id":1246410},{"op_sys":"Unspecified","keywords":["perf:responsiveness","reproducible"],"severity":"S3","component":"Graphics: WebRender","summary":"Firefox hangs with 100% CPU usage when scrolling on specific page","priority":"--","status":"NEW","id":1257910,"creation_time":"2016-03-18T17:34:07Z","last_change_time":"2024-09-22T11:59:59Z"},{"id":1265980,"creation_time":"2016-04-20T07:12:37Z","last_change_time":"2022-10-11T18:13:31Z","priority":"--","status":"NEW","component":"JavaScript 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x2go","status":"NEW","priority":"P3","creation_time":"2016-06-29T13:06:59Z","last_change_time":"2022-12-08T15:45:06Z","id":1283089},{"component":"Layout","summary":"Try to tick refresh driver during html parsing","keywords":["perf"],"op_sys":"Unspecified","severity":"S3","id":1294625,"last_change_time":"2022-10-11T18:30:52Z","creation_time":"2016-08-12T05:51:58Z","priority":"P3","status":"NEW"},{"status":"NEW","priority":"P3","last_change_time":"2022-10-11T18:31:41Z","creation_time":"2016-08-18T03:04:45Z","id":1296161,"severity":"S3","op_sys":"Unspecified","keywords":["perf"],"summary":"Measure and solve sync reflow for studying gdoc performance.","component":"Layout"},{"priority":"P3","status":"NEW","id":1303296,"last_change_time":"2022-10-11T18:35:56Z","creation_time":"2016-09-16T09:55:31Z","op_sys":"All","keywords":["perf"],"severity":"S3","summary":"Implement Expected Queueing Time (EQT) for Telemetry/Profiler","component":"DOM: Events"},{"status":"NEW","priority":"--","last_change_time":"2024-08-14T04:57:13Z","creation_time":"2016-10-03T03:00:35Z","id":1307024,"severity":"S3","keywords":["perf"],"op_sys":"Linux","component":"General","summary":"[Perf] [google docs] Firefox will get 3~9% faster when running gdoc test cases with chrome user agent"},{"summary":"for background tabs, break refresh driver tick into multiple events off the main thread's event loop","component":"Layout","severity":"--","keywords":["perf","perf:responsiveness"],"op_sys":"Unspecified","creation_time":"2016-10-08T00:18:22Z","last_change_time":"2025-01-17T17:10:03Z","id":1308660,"status":"NEW","priority":"--"},{"keywords":["perf"],"op_sys":"Windows 10","severity":"S3","summary":"Google Apps extremely slow -- scrolling, updating text, etc -- unusable","component":"JavaScript Engine","priority":"P5","status":"NEW","id":1316864,"creation_time":"2016-11-11T14:41:11Z","last_change_time":"2022-10-11T18:44:06Z"},{"summary":"[meta] Speed and performance of importing bookmarks from JSON or HTML files is awful","component":"Bookmarks & History","op_sys":"All","keywords":["hang","meta","nightly-community","perf:frontend"],"severity":"--","id":1320534,"last_change_time":"2023-05-11T18:07:57Z","creation_time":"2016-11-27T11:13:21Z","priority":"P5","status":"NEW"},{"last_change_time":"2023-02-07T15:18:45Z","creation_time":"2017-01-11T03:23:20Z","id":1330187,"status":"NEW","priority":"P3","summary":"DisplayList building shows signs of poor CPU usage","component":"Layout","severity":"S3","op_sys":"Unspecified","keywords":["perf:resource-use"]},{"component":"Layout","summary":"Explore using the presshell arena for FramePropertyTable","keywords":["perf:resource-use"],"op_sys":"Unspecified","severity":"S3","id":1330558,"creation_time":"2017-01-12T08:37:41Z","last_change_time":"2022-10-11T18:55:13Z","priority":"P3","status":"NEW"},{"id":1334655,"last_change_time":"2022-10-11T18:58:09Z","creation_time":"2017-01-27T21:15:19Z","priority":"P3","status":"NEW","summary":"PCompositorBridge::Msg_WillClose can block the UI thread when closing a window","component":"Graphics: Layers","op_sys":"Unspecified","keywords":["hang","perf"],"severity":"S3"},{"priority":"P3","status":"NEW","id":1341882,"last_change_time":"2022-10-11T19:02:26Z","creation_time":"2017-02-22T22:05:51Z","keywords":["perf"],"op_sys":"Unspecified","severity":"S3","component":"Graphics","summary":"Slow performance at drawing rectangles on Google Slides"},{"keywords":["perf"],"op_sys":"Unspecified","severity":"S3","summary":"Stop looking up GLContext symbols for every new window","component":"Graphics","priority":"P3","status":"NEW","id":1341913,"last_change_time":"2023-08-18T02:30:51Z","creation_time":"2017-02-22T23:15:05Z"},{"component":"Networking: HTTP","summary":"Speed up PHttpChannelConstructor and consider streaming HttpChannelOpenArgs","severity":"S3","keywords":["perf"],"op_sys":"Unspecified","creation_time":"2017-02-25T04:45:01Z","last_change_time":"2022-03-02T15:55:52Z","id":1342632,"status":"NEW","priority":"P3"},{"priority":"P3","status":"NEW","id":1343383,"creation_time":"2017-02-28T23:07:56Z","last_change_time":"2022-10-11T19:03:23Z","keywords":["perf"],"op_sys":"Unspecified","severity":"S3","summary":"nsIDOMWindowUtils::StartFrameTimeRecording should not use sync IPC","component":"Graphics: Layers"},{"component":"Web Painting","summary":"Overpainting on Google docs","op_sys":"Unspecified","keywords":["perf","perf:responsiveness"],"severity":"S3","id":1343538,"creation_time":"2017-03-01T15:26:14Z","last_change_time":"2024-11-22T02:22:00Z","priority":"--","status":"NEW"},{"severity":"S3","keywords":["perf"],"op_sys":"All","component":"JavaScript Engine: JIT","summary":"Consider compiling Ion IC code less eagerly","status":"NEW","priority":"P2","last_change_time":"2022-10-11T19:05:12Z","creation_time":"2017-03-10T12:17:59Z","id":1346178},{"id":1346927,"creation_time":"2017-03-13T20:32:12Z","last_change_time":"2022-10-11T19:05:40Z","priority":"--","status":"NEW","component":"WebVR","summary":"Replace PVRManager::GetSensorState with lock-free shared memory structure (Eliminating message queue IPC)","keywords":["perf"],"op_sys":"Unspecified","severity":"S3"},{"summary":"Consider storing hints during syntax parse","component":"JavaScript Engine","keywords":["perf"],"op_sys":"Unspecified","severity":"S3","id":1347861,"creation_time":"2017-03-16T09:28:24Z","last_change_time":"2022-10-11T19:06:12Z","priority":"P5","status":"NEW"},{"severity":"S3","op_sys":"All","keywords":["perf"],"summary":"Optimize away OverflowAreasProperty more often","component":"Layout","status":"NEW","priority":"--","last_change_time":"2023-11-27T10:28:31Z","creation_time":"2017-03-19T22:26:30Z","id":1348697},{"id":1349148,"creation_time":"2017-03-21T09:28:43Z","last_change_time":"2024-04-24T02:40:50Z","priority":"P3","status":"NEW","component":"JavaScript Engine: JIT","summary":"Improve performance of megamorphic stubs","op_sys":"All","keywords":["perf"],"severity":"S3"},{"severity":"S3","op_sys":"Unspecified","keywords":["perf"],"component":"DOM: Service Workers","summary":"Make service worker ScriptLoader paths use cached js bytecode from cache API","status":"NEW","priority":"P3","creation_time":"2017-03-24T15:40:46Z","last_change_time":"2022-10-11T19:08:05Z","id":1350367},{"status":"NEW","priority":"--","creation_time":"2017-03-25T15:19:03Z","last_change_time":"2023-07-19T04:57:18Z","id":1350569,"severity":"S3","op_sys":"Unspecified","keywords":["perf:frontend"],"summary":"Avoid full session history collect for DOMTitleChanged/OnHistoryReload","component":"Session Restore"},{"id":1350618,"last_change_time":"2022-10-11T19:08:17Z","creation_time":"2017-03-25T21:49:47Z","priority":"P3","status":"NEW","component":"Audio/Video: Playback","summary":"Bad performance on Sony Horizon game page","op_sys":"Unspecified","keywords":["perf"],"severity":"S3"},{"component":"General","summary":"Add some instrumentation to find commonly added preference observers","severity":"S3","op_sys":"Unspecified","keywords":["perf"],"last_change_time":"2022-10-11T19:08:21Z","creation_time":"2017-03-26T21:54:08Z","id":1350749,"status":"NEW","priority":"--"},{"id":1351755,"last_change_time":"2023-06-26T13:30:14Z","creation_time":"2017-03-29T17:44:37Z","priority":"--","status":"NEW","summary":"Provide \"Slight/Light/Low power/Battery saving/Battery saver\" mode option","component":"Performance","keywords":["nightly-community","perf","perf:resource-use","power"],"op_sys":"All","severity":"--"},{"status":"NEW","priority":"P3","last_change_time":"2024-12-05T16:28:47Z","creation_time":"2017-03-29T18:30:44Z","id":1351789,"severity":"S3","keywords":["perf"],"op_sys":"Unspecified","summary":"Add Telemetry probes for measuring garbage volume per GC","component":"JavaScript: GC"},{"component":"Layout","summary":"Consider faster alternatives to PLDHashTable in hot Layout code paths","op_sys":"All","keywords":["perf"],"severity":"S3","id":1351829,"last_change_time":"2022-10-11T19:09:06Z","creation_time":"2017-03-29T20:02:58Z","priority":"--","status":"NEW"},{"id":1351830,"creation_time":"2017-03-29T20:09:00Z","last_change_time":"2022-10-11T19:09:06Z","priority":"--","status":"NEW","summary":"Consider adding StyleDisplay() values to nsIFrame","component":"Layout","keywords":["perf"],"op_sys":"All","severity":"S3"},{"id":1352205,"last_change_time":"2022-11-02T13:08:34Z","creation_time":"2017-03-30T20:21:31Z","priority":"P2","status":"NEW","summary":"Avoid running the refresh driver when the page is in background","component":"Layout","op_sys":"Unspecified","keywords":["perf","perf:resource-use"],"severity":"--"},{"op_sys":"Unspecified","keywords":["meta","perf"],"severity":"S3","summary":"[meta] Improve GC scheduling","component":"JavaScript: GC","priority":"P3","status":"NEW","id":1352524,"creation_time":"2017-03-31T19:02:50Z","last_change_time":"2023-05-05T15:21:18Z"},{"component":"JavaScript Engine: JIT","summary":"Optimize GetName TypeOfNoProperty","severity":"S3","op_sys":"All","keywords":["perf"],"creation_time":"2017-04-04T14:54:51Z","last_change_time":"2022-10-11T19:10:17Z","id":1353384,"status":"NEW","priority":"P3"},{"creation_time":"2017-04-09T22:09:43Z","last_change_time":"2022-10-11T19:11:14Z","id":1354945,"status":"NEW","priority":"P3","summary":"Initialize sandbox global properties lazily","component":"XPConnect","severity":"S3","op_sys":"Unspecified","keywords":["perf"]},{"severity":"S3","keywords":["perf","perf:frontend","perf:responsiveness"],"op_sys":"Unspecified","summary":"Investigate preparing the next tab on mousedown on the tab close button","component":"Tabbed Browser","status":"NEW","priority":"P3","creation_time":"2017-04-11T13:02:53Z","last_change_time":"2023-07-19T04:59:14Z","id":1355456},{"severity":"S3","keywords":["perf:frontend"],"op_sys":"Unspecified","summary":"The last window and the task bar item should disappear immediately on shutdown","component":"General","status":"NEW","priority":"P4","last_change_time":"2023-05-16T02:22:12Z","creation_time":"2017-04-11T13:07:05Z","id":1355459},{"id":1355466,"creation_time":"2017-04-11T13:26:24Z","last_change_time":"2022-10-11T19:11:35Z","priority":"P3","status":"NEW","component":"Widget: Cocoa","summary":"Activating the browser window is janky","keywords":["perf","perf:responsiveness"],"op_sys":"macOS","severity":"S3"},{"severity":"S3","keywords":["perf:frontend","perf:responsiveness"],"op_sys":"Unspecified","component":"Autocomplete","summary":"Try avoiding layout flushes in autocomplete::_handleOverflow","status":"NEW","priority":"P3","last_change_time":"2024-03-22T08:25:52Z","creation_time":"2017-04-14T09:29:21Z","id":1356532},{"id":1356594,"creation_time":"2017-04-14T16:14:15Z","last_change_time":"2022-10-11T19:12:20Z","priority":"P3","status":"NEW","summary":"Rewrite AppConstants.jsm in C++","component":"General","op_sys":"Unspecified","keywords":["perf:resource-use"],"severity":"S3"},{"creation_time":"2017-04-19T11:50:56Z","last_change_time":"2024-03-22T13:34:58Z","id":1357710,"status":"NEW","priority":"P3","summary":"Uninitializing UITour is expensive","component":"Tours","severity":"S3","op_sys":"Unspecified","keywords":["perf","perf:frontend","perf:responsiveness"]},{"id":1357810,"last_change_time":"2022-10-11T19:13:04Z","creation_time":"2017-04-19T16:33:44Z","priority":"P3","status":"NEW","summary":"Investigate source of memory_pressure event in gecko, and whether to repurpose it","component":"JavaScript: 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browser","component":"General"},{"component":"UI Widgets","summary":"Reduce reflows in autocomplete binding (adjustHeight and potentially handleOverflow?)","op_sys":"Unspecified","keywords":["perf:frontend","perf:responsiveness"],"severity":"S3","id":1477235,"creation_time":"2018-07-20T12:36:35Z","last_change_time":"2024-04-16T17:04:29Z","priority":"P5","status":"NEW"},{"severity":"S3","keywords":["perf:frontend","perf:responsiveness"],"op_sys":"Unspecified","summary":"Proactively warm up layers for the next (and previous?) tab when user presses ctrl (Win/Lin) or cmd (Mac)","component":"Tabbed Browser","status":"NEW","priority":"P5","creation_time":"2018-07-26T15:28:37Z","last_change_time":"2023-09-21T15:50:25Z","id":1478703},{"severity":"S3","op_sys":"Unspecified","keywords":["perf","perf:frontend"],"summary":"URL bar seems to trigger multiple layouts when browser window is resized at certain sizes","component":"Toolbars and 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recreatePopup@resource:///modules/UITour.jsm:1443:5","severity":"S3","op_sys":"Linux","keywords":["perf:frontend","perf:responsiveness"]},{"creation_time":"2018-08-11T23:22:41Z","last_change_time":"2024-04-03T17:59:14Z","id":1482671,"status":"NEW","priority":"P3","component":"Tours","summary":"2.32ms uninterruptible reflow at showHighlightElement@resource:///modules/UITour.jsm:1046:24","severity":"S3","op_sys":"Linux","keywords":["perf:frontend","perf:responsiveness"]},{"severity":"S3","keywords":["perf:frontend","perf:responsiveness"],"op_sys":"Linux","component":"Tabbed Browser","summary":"2.09ms uninterruptible reflow at onxbldragover@chrome://browser/content/tabbrowser.xml:1391:9","status":"NEW","priority":"P5","last_change_time":"2024-03-21T11:37:04Z","creation_time":"2018-08-12T20:37:09Z","id":1482734},{"component":"Toolbars and Customization","summary":"1.17ms uninterruptible reflow at showTooltip@chrome://browser/content/browser.js:4539:5","severity":"S3","keywords":["perf:responsiveness"],"op_sys":"Linux","creation_time":"2018-08-14T15:44:10Z","last_change_time":"2024-04-02T13:31:31Z","id":1483268,"status":"NEW","priority":"P3"},{"priority":"P3","status":"NEW","id":1487303,"creation_time":"2018-08-30T04:44:58Z","last_change_time":"2024-03-21T11:33:28Z","op_sys":"Linux","keywords":["perf:responsiveness"],"severity":"S3","component":"Menus","summary":"1.05ms uninterruptible reflow at openPopup/this._openPopupPromise<@resource:///modules/PanelMultiView.jsm:518:9"},{"status":"NEW","priority":"P3","last_change_time":"2023-09-21T16:04:43Z","creation_time":"2018-08-31T16:55:30Z","id":1487822,"severity":"S3","op_sys":"Linux","keywords":["perf:frontend","perf:responsiveness"],"component":"Menus","summary":"4.13ms uninterruptible reflow at 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building display lists."},{"last_change_time":"2022-10-11T22:07:54Z","creation_time":"2018-10-23T19:39:44Z","id":1501415,"status":"NEW","priority":"P3","summary":"5+ second delay before first paint, when loading 27mb plaintext log file","component":"Layout: Text and Fonts","severity":"S3","keywords":[],"op_sys":"Unspecified"},{"summary":"A lot of time spent in query_selector","component":"DOM: CSS Object Model","op_sys":"Unspecified","keywords":["perf:pageload"],"severity":"S3","id":1503119,"last_change_time":"2022-10-11T22:09:15Z","creation_time":"2018-10-30T04:56:35Z","priority":"P3","status":"NEW"},{"summary":"Large local files with many pictures load extremely 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performance regression in webgame on https://project-f.github.io","severity":"S3","op_sys":"Windows 10","keywords":["perf:responsiveness","regression"],"last_change_time":"2022-03-02T16:41:49Z","creation_time":"2020-12-20T17:53:30Z","id":1683560,"status":"NEW","priority":"P3"},{"creation_time":"2020-12-26T05:40:05Z","last_change_time":"2022-08-31T11:57:52Z","id":1684233,"status":"NEW","priority":"P3","component":"Performance","summary":"NYmag article causes laptop fans to kick in","severity":"S3","keywords":["nightly-community"],"op_sys":"Unspecified"},{"summary":"Noticeable UI lag when deleting lots of history entries because TopSitesFeed.refresh is called for every single one","component":"Top 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permanent ~50% load of Firefox"},{"component":"XPConnect","summary":"Consider auto-terminating slow scripts if they are running in a process only serving ads","severity":"S4","keywords":["perf:resource-use"],"op_sys":"Unspecified","creation_time":"2021-03-23T15:31:54Z","last_change_time":"2022-12-01T02:46:30Z","id":1700377,"status":"NEW","priority":"P3"},{"priority":"--","status":"NEW","id":1708802,"last_change_time":"2022-04-28T14:19:42Z","creation_time":"2021-04-30T19:28:55Z","op_sys":"Unspecified","keywords":["perf:frontend","perf:responsiveness"],"severity":"S3","component":"Tours","summary":"UITour should not iterate through all browser windows for every closed tab"},{"status":"NEW","priority":"P2","last_change_time":"2024-10-29T14:11:04Z","creation_time":"2021-05-03T19:31:39Z","id":1709175,"severity":"S3","op_sys":"macOS","keywords":["perf:resource-use","power"],"component":"Networking","summary":"Switch from select() to poll for MacOS to reduce CPU usage"},{"summary":"When 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load","status":"UNCONFIRMED","priority":"P3","last_change_time":"2025-01-06T14:09:27Z","creation_time":"2024-11-27T19:17:17Z","id":1933799},{"priority":"--","status":"UNCONFIRMED","id":1935272,"creation_time":"2024-12-04T23:23:04Z","last_change_time":"2025-01-06T10:43:34Z","keywords":["perf:responsiveness","reproducible"],"op_sys":"Unspecified","severity":"--","summary":"Keyboard delay when typing in the the long text field on leetcode.com","component":"Performance"},{"id":1940522,"creation_time":"2025-01-08T17:38:24Z","last_change_time":"2025-01-17T14:13:33Z","priority":"--","status":"UNCONFIRMED","summary":"High CPU consumption when using Google Meet","component":"Performance","op_sys":"Unspecified","keywords":[],"severity":"--"},{"id":1941238,"creation_time":"2025-01-12T22:22:15Z","last_change_time":"2025-01-20T16:23:16Z","priority":"--","status":"UNCONFIRMED","component":"Performance","summary":"Constant CPU usage while idling on an ElevenLabs.io page with no animations","op_sys":"Unspecified","keywords":["perf:resource-use"],"severity":"--"}]}