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bugzilla-data-all.json
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{
"high": {
"bugs": [
{
"keywords": [],
"priority": "--",
"severity": "S3",
"summary": "Slow HTMLElement.focus calls on matrix-react benchmark",
"op_sys": "All",
"status": "ASSIGNED",
"creation_time": "2022-03-17T14:56:27Z",
"last_change_time": "2022-12-27T04:43:45Z",
"component": "DOM: Core & HTML",
"id": 1760045
},
{
"status": "ASSIGNED",
"keywords": [
"leave-open",
"perf:responsiveness",
"reproducible",
"top50",
"webcompat:platform-bug"
],
"priority": "P1",
"severity": "S2",
"summary": "H3 upload Speed still slow. Three times slower than other browsers.",
"op_sys": "Unspecified",
"component": "Networking: HTTP",
"id": 1852924,
"creation_time": "2023-09-13T10:36:04Z",
"last_change_time": "2025-01-21T16:43:21Z"
},
{
"component": "Storage: Quota Manager",
"id": 1903530,
"creation_time": "2024-06-19T11:50:31Z",
"last_change_time": "2025-01-17T07:47:01Z",
"status": "ASSIGNED",
"keywords": [],
"priority": "P1",
"severity": "S2",
"summary": "Frequent long janks on Android on loading certain pages",
"op_sys": "Unspecified"
},
{
"creation_time": "2019-12-10T17:22:25Z",
"last_change_time": "2024-05-16T14:42:52Z",
"component": "Widget: Cocoa",
"id": 1602842,
"keywords": [
"perf:responsiveness"
],
"priority": "P2",
"severity": "S2",
"summary": "OSXDisplay::EnableVsync hangs in CVDisplayLinkCreateWithActiveCGDisplays",
"op_sys": "Unspecified",
"status": "NEW"
},
{
"last_change_time": "2023-05-19T20:35:11Z",
"creation_time": "2021-01-28T16:03:57Z",
"id": 1689392,
"component": "Performance",
"op_sys": "Unspecified",
"summary": "[Meta] investigate performance issues on Reddit.",
"severity": "--",
"priority": "--",
"keywords": [
"meta"
],
"status": "NEW"
},
{
"last_change_time": "2024-05-16T00:17:02Z",
"creation_time": "2022-05-25T16:56:04Z",
"component": "Web Audio",
"id": 1771179,
"priority": "P2",
"keywords": [],
"summary": "AudioContext power optimizations",
"op_sys": "Unspecified",
"severity": "S2",
"status": "NEW"
},
{
"id": 1788530,
"component": "Performance",
"creation_time": "2022-08-31T21:19:22Z",
"last_change_time": "2024-11-30T04:50:09Z",
"status": "NEW",
"severity": "S2",
"op_sys": "Unspecified",
"summary": "Fenix hangs and memory usage jumps on theguardian.com when opening headlines in new tab",
"keywords": [
"perf:resource-use",
"perf:responsiveness",
"reproducible"
],
"priority": "P2"
},
{
"component": "Experimentation and Telemetry",
"id": 1892234,
"creation_time": "2024-04-18T13:42:25Z",
"last_change_time": "2025-01-16T13:30:43Z",
"status": "NEW",
"keywords": [
"regression",
"regressionwindow-wanted"
],
"priority": "P2",
"severity": "S2",
"summary": "org.mozilla.experiments.nimbus.Nimbus$applyLocalExperiments$2$1.invoke blocks startup for 110ms while it's loading libxul",
"op_sys": "Android"
},
{
"component": "Performance",
"id": 1928948,
"creation_time": "2024-11-04T09:34:27Z",
"last_change_time": "2025-01-24T20:39:47Z",
"status": "NEW",
"keywords": [
"webcompat:site-report"
],
"priority": "--",
"severity": "--",
"op_sys": "Windows 10",
"summary": "vizzy.io - The browser is slowed down and eventually stops responding"
},
{
"status": "REOPENED",
"op_sys": "Unspecified",
"summary": "ContentParent::KillHard janks the main thread",
"severity": "S2",
"priority": "--",
"keywords": [
"perf:responsiveness",
"perf:startup",
"reproducible"
],
"id": 1550754,
"component": "Crash Reporting",
"last_change_time": "2023-10-11T11:59:19Z",
"creation_time": "2019-05-10T14:52:25Z"
},
{
"priority": "--",
"keywords": [
"perf:responsiveness",
"reproducible"
],
"summary": "youtube music becomes verry slow when switching music after a while",
"op_sys": "Unspecified",
"severity": "S2",
"status": "UNCONFIRMED",
"last_change_time": "2025-01-14T03:51:54Z",
"creation_time": "2024-12-31T19:38:59Z",
"component": "Performance",
"id": 1939605
}
]
},
"medium": {
"bugs": [
{
"priority": "--",
"last_change_time": "2024-02-20T05:25:50Z",
"op_sys": "All",
"status": "ASSIGNED",
"keywords": [
"leave-open",
"perf",
"perf:resource-use",
"power"
],
"summary": "animated images inside visibility:hidden still eat CPU",
"id": 560067,
"component": "Layout",
"severity": "S3",
"creation_time": "2010-04-18T03:14:10Z"
},
{
"priority": "P1",
"last_change_time": "2024-04-08T18:36:30Z",
"op_sys": "Android",
"status": "ASSIGNED",
"summary": "m.facebook.com live site loads 1s slower in Fenix/GVE than Fennec 64",
"keywords": [
"perf:pageload"
],
"id": 1543783,
"component": "Performance",
"severity": "S3",
"creation_time": "2019-04-11T18:20:49Z"
},
{
"severity": "N/A",
"creation_time": "2020-04-21T20:35:58Z",
"id": 1631932,
"component": "General",
"status": "ASSIGNED",
"priority": "P3",
"last_change_time": "2024-12-18T18:39:46Z",
"op_sys": "Unspecified",
"keywords": [
"perf",
"perf:startup"
],
"summary": "move system addons into builtins in omni.ja"
},
{
"creation_time": "2021-05-12T16:27:38Z",
"severity": "--",
"component": "IPC",
"id": 1710884,
"summary": "Add IPC glue code for self-hosted XDR content [Android]",
"keywords": [
"perf:startup"
],
"status": "ASSIGNED",
"op_sys": "Android",
"last_change_time": "2025-01-24T21:44:10Z",
"priority": "--"
},
{
"last_change_time": "2025-01-06T15:03:33Z",
"op_sys": "Android",
"priority": "P3",
"status": "ASSIGNED",
"summary": "js::jit::GenerateCode spends a lot of time in malloc lock contention",
"keywords": [],
"component": "JavaScript Engine: JIT",
"id": 1922073,
"creation_time": "2024-10-01T18:43:40Z",
"severity": "S3"
},
{
"status": "ASSIGNED",
"op_sys": "Windows 10",
"last_change_time": "2025-01-24T17:43:50Z",
"priority": "P1",
"keywords": [
"perf:pageload",
"regression",
"reproducible",
"webcompat:site-report"
],
"summary": "dickssportinggoods.com - Loads extremely slow or not at all",
"creation_time": "2024-12-19T09:32:13Z",
"severity": "S2",
"component": "Site Reports",
"id": 1938290
},
{
"priority": "P3",
"last_change_time": "2024-08-15T14:01:50Z",
"op_sys": "All",
"status": "NEW",
"summary": "CSS parsing is 5.5% of startup time",
"keywords": [
"arch",
"perf",
"perf:startup"
],
"id": 91242,
"component": "CSS Parsing and Computation",
"severity": "S3",
"creation_time": "2001-07-18T04:11:33Z"
},
{
"severity": "S3",
"creation_time": "2003-08-17T03:26:28Z",
"id": 216418,
"component": "Layout",
"status": "NEW",
"priority": "--",
"last_change_time": "2023-05-15T19:04:00Z",
"op_sys": "All",
"summary": "Page with lots of <pre> text (or rather: extremely deeply-nested inline tags, with lots of linebreaks) uses lots of memory in layout arenas and is slow to load",
"keywords": [
"perf"
]
},
{
"severity": "S3",
"creation_time": "2005-08-15T08:01:49Z",
"id": 304683,
"component": "Graphics: ImageLib",
"status": "NEW",
"priority": "--",
"op_sys": "All",
"last_change_time": "2024-09-04T13:05:12Z",
"summary": "firefox struggles with large doxygen html file in nsLocalFile::GetLastModifiedTime (from imgLoader)",
"keywords": [
"perf:pageload",
"perf:resource-use",
"perf:responsiveness",
"reproducible"
]
},
{
"severity": "S3",
"creation_time": "2011-04-19T08:20:35Z",
"id": 651049,
"component": "XML",
"keywords": [
"perf:pageload"
],
"summary": "Write a new off-the-main-thread IO driver for expat",
"status": "NEW",
"priority": "--",
"last_change_time": "2023-08-23T01:33:13Z",
"op_sys": "All"
},
{
"op_sys": "All",
"last_change_time": "2023-12-04T11:49:57Z",
"priority": "--",
"status": "NEW",
"summary": "Make ImageLib share cached imgRequests for the same SVG document even if the URI has a different ref/hash",
"keywords": [
"perf:pageload",
"perf:resource-use",
"reproducible",
"testcase-wanted"
],
"component": "Graphics: ImageLib",
"id": 1027106,
"creation_time": "2014-06-18T15:22:41Z",
"severity": "S3"
},
{
"status": "NEW",
"priority": "P2",
"last_change_time": "2024-06-04T18:21:25Z",
"op_sys": "All",
"summary": "Website causes Firefox to completely hang because same script file is getting loaded over and over again",
"keywords": [
"csectype-dos",
"hang",
"memory-leak",
"perf:responsiveness",
"reproducible",
"testcase"
],
"severity": "S3",
"creation_time": "2014-07-13T16:33:17Z",
"id": 1037984,
"component": "New Tab Page"
},
{
"creation_time": "2014-12-04T20:16:51Z",
"severity": "S4",
"component": "DOM: Core & HTML",
"id": 1107626,
"status": "NEW",
"last_change_time": "2022-03-02T15:47:27Z",
"op_sys": "All",
"priority": "P5",
"summary": "Evaluate aggregating timers to reduce the number of times we wake up the CPU for serving them",
"keywords": [
"perf:resource-use"
]
},
{
"summary": "Thumbnail generation should have a time limit",
"keywords": [
"memory-footprint",
"memory-leak",
"perf",
"perf:responsiveness",
"top-memory-leak"
],
"status": "NEW",
"op_sys": "All",
"last_change_time": "2023-07-24T12:16:09Z",
"priority": "P3",
"creation_time": "2015-05-07T20:09:26Z",
"severity": "--",
"component": "New Tab Page",
"id": 1162698
},
{
"severity": "S3",
"creation_time": "2016-09-21T13:54:15Z",
"id": 1304389,
"component": "Session Restore",
"status": "NEW",
"priority": "--",
"op_sys": "All",
"last_change_time": "2024-09-03T17:02:27Z",
"summary": "Session Restore generates sustained large disk traffic [meta]",
"keywords": [
"meta",
"perf:animation",
"perf:resource-use",
"perf:responsiveness",
"reproducible"
]
},
{
"keywords": [
"perf",
"perf:pageload"
],
"summary": "Consider using FramePropertyTable less in layout",
"op_sys": "Unspecified",
"last_change_time": "2022-10-11T19:06:39Z",
"priority": "P3",
"status": "NEW",
"component": "Layout",
"id": 1348469,
"creation_time": "2017-03-18T03:14:39Z",
"severity": "S3"
},
{
"component": "Application Update",
"id": 1349809,
"creation_time": "2017-03-23T02:16:50Z",
"severity": "S3",
"op_sys": "macOS",
"last_change_time": "2022-10-11T19:07:40Z",
"priority": "P3",
"status": "NEW",
"summary": "getElevationRequired janks the parent process by doing IO on the main thread",
"keywords": [
"perf",
"perf:responsiveness"
]
},
{
"severity": "S3",
"creation_time": "2017-04-17T21:50:27Z",
"id": 1357205,
"component": "Add-ons Manager",
"keywords": [
"perf:startup"
],
"summary": "move built-in add-ons into omni.ja",
"status": "NEW",
"priority": "P3",
"last_change_time": "2022-10-11T19:12:45Z",
"op_sys": "Unspecified"
},
{
"severity": "S3",
"creation_time": "2017-05-08T18:35:31Z",
"id": 1363131,
"component": "Bookmarks & History",
"status": "NEW",
"priority": "P3",
"op_sys": "Unspecified",
"last_change_time": "2024-04-03T13:53:20Z",
"summary": "Showing the bookmarks panel is too slow the first time",
"keywords": [
"perf:responsiveness"
]
},
{
"status": "NEW",
"last_change_time": "2022-10-11T19:16:59Z",
"op_sys": "Unspecified",
"priority": "--",
"summary": "[meta] Creating the XPCOM system info service is super expensive",
"keywords": [
"meta",
"perf",
"perf:responsiveness",
"perf:startup"
],
"creation_time": "2017-05-10T02:24:10Z",
"severity": "S3",
"component": "XPCOM",
"id": 1363586
},
{
"component": "Widget: Win32",
"id": 1364091,
"creation_time": "2017-05-11T14:44:03Z",
"severity": "S3",
"summary": "Defer mozilla::widget::AudioSession::Start() until later in startup",
"keywords": [
"perf",
"perf:responsiveness",
"perf:startup"
],
"op_sys": "Unspecified",
"last_change_time": "2022-10-11T19:17:24Z",
"priority": "P3",
"status": "NEW"
},
{
"keywords": [
"perf:responsiveness",
"perf:startup"
],
"summary": "NSS should be initialized off main thread",
"status": "NEW",
"op_sys": "Unspecified",
"last_change_time": "2023-12-11T13:17:23Z",
"priority": "P2",
"creation_time": "2017-06-06T12:51:51Z",
"severity": "S3",
"component": "Security: PSM",
"id": 1370516
},
{
"summary": "Add-on icons should be in the navbar by first paint",
"keywords": [
"perf:frontend",
"perf:startup",
"regression",
"regressionwindow-wanted"
],
"priority": "P3",
"last_change_time": "2022-10-11T19:24:38Z",
"op_sys": "Unspecified",
"status": "NEW",
"id": 1374216,
"component": "Toolbars and Customization",
"severity": "S3",
"creation_time": "2017-06-19T08:52:46Z"
},
{
"keywords": [],
"summary": "Add ICs for slotful own-prop Xray property access (property on the expando)",
"status": "NEW",
"priority": "P3",
"last_change_time": "2024-12-06T16:27:49Z",
"op_sys": "Unspecified",
"severity": "S3",
"creation_time": "2017-08-08T21:56:17Z",
"id": 1388538,
"component": "JavaScript Engine"
},
{
"severity": "S3",
"creation_time": "2017-08-25T20:33:04Z",
"id": 1393977,
"component": "JavaScript Engine",
"status": "NEW",
"priority": "P3",
"op_sys": "All",
"last_change_time": "2022-10-11T19:37:50Z",
"summary": "Compiling the same script again and again for each embedded YouTube video",
"keywords": [
"perf"
]
},
{
"component": "Audio/Video: Playback",
"id": 1400787,
"creation_time": "2017-09-18T08:13:45Z",
"severity": "S3",
"summary": "Using software video decoders (include VP9) ramps up computer fans on Macbook.",
"keywords": [
"perf:resource-use"
],
"op_sys": "macOS",
"last_change_time": "2022-10-11T19:42:53Z",
"priority": "P3",
"status": "NEW"
},
{
"creation_time": "2017-09-25T16:43:13Z",
"severity": "S3",
"component": "XPCOM",
"id": 1402910,
"summary": "drag gecko hashtables into the current century",
"keywords": [
"perf",
"perf:responsiveness"
],
"status": "NEW",
"op_sys": "All",
"last_change_time": "2022-10-11T19:44:41Z",
"priority": "P3"
},
{
"priority": "P2",
"last_change_time": "2022-10-11T19:47:36Z",
"op_sys": "Unspecified",
"status": "NEW",
"keywords": [
"perf:responsiveness"
],
"summary": "stylo: use invalidation framework to handle restyles needed in response to content insertion/removal",
"id": 1406622,
"component": "CSS Parsing and Computation",
"severity": "S3",
"creation_time": "2017-10-07T10:11:51Z"
},
{
"summary": "With tab animations disabled, closing current tab to switch to another will visibly show a blank page with spinner (causing flashing)",
"keywords": [
"perf",
"perf:frontend"
],
"status": "NEW",
"op_sys": "All",
"last_change_time": "2023-03-15T20:38:46Z",
"priority": "P3",
"creation_time": "2017-12-18T17:47:35Z",
"severity": "S3",
"component": "Tabbed Browser",
"id": 1425887
},
{
"last_change_time": "2022-10-11T21:09:38Z",
"op_sys": "Unspecified",
"priority": "P2",
"status": "NEW",
"summary": "RexBench is slower than Chrome/WebKit",
"keywords": [
"perf"
],
"component": "JavaScript Engine",
"id": 1428972,
"creation_time": "2018-01-09T05:47:13Z",
"severity": "S3"
},
{
"status": "NEW",
"op_sys": "Unspecified",
"last_change_time": "2024-04-03T03:06:41Z",
"priority": "P3",
"summary": "Activity stream initialization causes jank after receiving the sessionstore-windows-restored notification",
"keywords": [
"perf:frontend",
"perf:startup"
],
"creation_time": "2018-02-21T13:15:04Z",
"severity": "S3",
"component": "New Tab Page",
"id": 1439892
},
{
"component": "CSS Parsing and Computation",
"id": 1443066,
"creation_time": "2018-03-05T04:29:30Z",
"severity": "S3",
"keywords": [
"perf",
"perf:responsiveness"
],
"summary": "Try to understand why we're slower than Chrome on StyleBench \"Positional pseudo classes : Adding leaf elements: Async\" (& similar \"Removing\" measurement)",
"op_sys": "Unspecified",
"last_change_time": "2022-10-11T21:21:11Z",
"priority": "P3",
"status": "NEW"
},
{
"id": 1446012,
"component": "Application Update",
"severity": "S3",
"creation_time": "2018-03-15T16:29:05Z",
"priority": "P3",
"last_change_time": "2022-10-11T21:23:37Z",
"op_sys": "Unspecified",
"status": "NEW",
"keywords": [
"perf:startup"
],
"summary": "The first startup after an update does main thread I/O to update.status several times"
},
{
"keywords": [
"perf"
],
"summary": "Optimize resume point creation in IonBuilder",
"status": "NEW",
"priority": "P3",
"op_sys": "All",
"last_change_time": "2022-10-11T21:30:16Z",
"severity": "S3",
"creation_time": "2018-04-17T08:42:34Z",
"id": 1454586,
"component": "JavaScript Engine: JIT"
},
{
"keywords": [
"perf",
"perf:responsiveness",
"perf:startup"
],
"summary": "nsJARChannel::asyncOpen can still block",
"status": "NEW",
"last_change_time": "2022-10-11T21:31:53Z",
"op_sys": "Unspecified",
"priority": "P3",
"creation_time": "2018-04-24T20:33:58Z",
"severity": "S3",
"component": "Networking: JAR",
"id": 1456626
},
{
"severity": "S3",
"creation_time": "2018-04-24T21:08:43Z",
"id": 1456638,
"component": "Web Painting",
"summary": "Checkerboarding while scrollbar-dragging due to slow display list build on specific page with table layout",
"keywords": [
"nightly-community",
"perf",
"perf:responsiveness",
"regression"
],
"status": "NEW",
"priority": "P3",
"op_sys": "Windows 7",
"last_change_time": "2024-09-22T12:19:05Z"
},
{
"status": "NEW",
"last_change_time": "2024-02-08T23:49:09Z",
"op_sys": "Windows 10",
"priority": "P3",
"keywords": [
"perf",
"perf:responsiveness"
],
"summary": "It takes a long time to re-layout the plaintext page when the sidebar is opening or closing until move the mouse in the content area (with long time spent in RFindLineContaining)",
"creation_time": "2018-04-25T19:10:14Z",
"severity": "S3",
"component": "Layout: Block and Inline",
"id": 1456964
},
{
"summary": "TabChild::RecvRenderLayers often results in two consecutive paints",
"keywords": [
"perf:resource-use"
],
"status": "NEW",
"priority": "P2",
"op_sys": "Unspecified",
"last_change_time": "2023-09-21T15:50:42Z",
"severity": "S3",
"creation_time": "2018-04-26T19:55:49Z",
"id": 1457276,
"component": "DOM: Content Processes"
},
{
"op_sys": "Unspecified",
"last_change_time": "2023-05-22T15:45:39Z",
"priority": "P3",
"status": "NEW",
"keywords": [
"perf",
"perf:resource-use",
"perf:responsiveness"
],
"summary": "\"forget about this site\" in \"show all history\" blocks the main thread",
"component": "Bookmarks & History",
"id": 1458634,
"creation_time": "2018-05-02T18:01:37Z",
"severity": "S3"
},
{
"creation_time": "2018-06-11T20:32:18Z",
"severity": "S3",
"component": "Layout",
"id": 1468246,
"keywords": [
"perf:pageload"
],
"summary": "High variability in performance testing with large images",
"status": "NEW",
"op_sys": "Unspecified",
"last_change_time": "2022-10-11T21:41:13Z",
"priority": "P3"
},
{
"component": "Audio/Video: Playback",
"id": 1471029,
"creation_time": "2018-06-25T21:14:25Z",
"severity": "S3",
"keywords": [
"hang",
"perf:resource-use",
"power"
],
"summary": "High cpu/gpu usage and hangs on page-http://telegra.ph/Telegram-X-03-26 & other pages",
"last_change_time": "2022-10-11T21:43:40Z",
"op_sys": "All",
"priority": "P3",
"status": "NEW"
},
{
"op_sys": "Windows",
"last_change_time": "2022-10-11T21:47:20Z",
"priority": "P2",
"status": "NEW",
"keywords": [
"perf:responsiveness",
"perf:startup"
],
"summary": "Optimize Windows sandbox policy construction",
"component": "Security: Process Sandboxing",
"id": 1476101,
"creation_time": "2018-07-16T20:44:07Z",
"severity": "S3"
},
{
"summary": "style.foo = bar changes are slow",
"keywords": [
"perf:responsiveness"
],
"last_change_time": "2022-10-11T21:49:50Z",
"op_sys": "Unspecified",
"priority": "P3",
"status": "NEW",
"component": "CSS Parsing and Computation",
"id": 1478953,
"creation_time": "2018-07-27T10:44:44Z",
"severity": "S3"
},
{
"summary": "Removing DOM children where positional pseudo-classes are involved is really slow.",
"keywords": [
"perf:responsiveness"
],
"status": "NEW",
"priority": "P2",
"op_sys": "Unspecified",
"last_change_time": "2024-09-03T16:59:49Z",
"severity": "S3",
"creation_time": "2018-08-02T16:18:10Z",
"id": 1480477,
"component": "CSS Parsing and Computation"
},
{
"summary": "100% cpu usage and high memory use on page with multiple embedded videos",
"keywords": [
"perf:resource-use"
],
"status": "NEW",
"priority": "P2",
"op_sys": "All",
"last_change_time": "2022-10-11T21:52:11Z",
"severity": "S3",
"creation_time": "2018-08-08T22:40:31Z",
"id": 1481967,
"component": "Audio/Video: Playback"
},
{
"status": "NEW",
"priority": "P3",
"last_change_time": "2024-09-21T13:28:21Z",
"op_sys": "Unspecified",
"summary": "Try and re-attach NewObject stubs after GC",
"keywords": [],
"severity": "S3",
"creation_time": "2018-08-14T19:58:58Z",
"id": 1483345,
"component": "JavaScript Engine: JIT"
},
{
"keywords": [],
"summary": "Significant key input delay when typing on large Google Docs",
"priority": "P3",
"last_change_time": "2024-07-16T07:42:18Z",
"op_sys": "macOS",
"status": "NEW",
"id": 1488435,
"component": "JavaScript Engine",
"severity": "S3",
"creation_time": "2018-09-04T14:10:08Z"
},
{
"keywords": [
"meta"
],
"summary": "[meta] Long-standing Ion Compilation Time Issues",
"status": "NEW",
"last_change_time": "2023-07-18T21:09:40Z",
"op_sys": "Unspecified",
"priority": "P2",
"creation_time": "2018-09-12T22:40:00Z",
"severity": "S3",
"component": "JavaScript Engine: JIT",
"id": 1490847
},
{
"status": "NEW",
"priority": "P2",
"op_sys": "Unspecified",
"last_change_time": "2025-01-22T15:36:22Z",
"summary": "Off-Main-Thread Baseline Compilation",
"keywords": [],
"severity": "S3",
"creation_time": "2018-09-12T22:46:57Z",
"id": 1490849,
"component": "JavaScript Engine: JIT"
},
{
"severity": "S3",
"creation_time": "2018-10-03T15:02:45Z",
"id": 1496096,
"component": "Audio/Video: Playback",
"summary": "Horrible performance on runningworld due to media decoding",
"keywords": [
"perf:resource-use"
],
"status": "NEW",
"priority": "P2",
"last_change_time": "2022-10-11T22:03:30Z",
"op_sys": "Unspecified"
},
{
"severity": "S3",
"creation_time": "2018-10-12T07:38:21Z",
"id": 1498485,
"component": "JavaScript Engine",
"keywords": [
"perf:responsiveness"
],
"summary": "hubs.mozilla.com frame rate with an empty scene is too slow in FxR on Oculus Go",
"status": "NEW",
"priority": "P3",
"op_sys": "Android",
"last_change_time": "2024-05-03T15:18:39Z"
},
{
"severity": "S3",
"creation_time": "2018-10-26T12:54:03Z",
"id": 1502334,
"component": "CSS Parsing and Computation",
"status": "NEW",
"priority": "--",
"op_sys": "All",
"last_change_time": "2024-09-22T12:17:26Z",
"keywords": [
"perf:animation",
"regression",
"reproducible",
"top50"
],
"summary": "Reddit content is no longer displayed when scrolled (checkerboarding), with long restyles"
},
{
"priority": "P2",
"last_change_time": "2022-10-11T22:10:59Z",
"op_sys": "Android",
"status": "NEW",
"keywords": [
"perf:pageload"
],
"summary": "twitch.tv site loads slow compared to Chrome",
"id": 1505192,
"component": "JavaScript Engine",
"severity": "S3",
"creation_time": "2018-11-06T22:12:10Z"
},
{
"status": "NEW",
"priority": "P2",
"op_sys": "Unspecified",
"last_change_time": "2022-10-11T22:11:18Z",
"summary": "Getting a list of audio devices on about:support is super slow sometimes",
"keywords": [
"perf:responsiveness"
],
"severity": "S3",
"creation_time": "2018-11-07T17:49:31Z",
"id": 1505483,
"component": "Audio/Video"
},
{
"id": 1505533,
"component": "Graphics",
"severity": "S3",
"creation_time": "2018-11-07T19:32:59Z",
"keywords": [
"main-thread-io",
"perf:responsiveness"
],
"summary": "graphics data gathering (and/or canvas webgl context initialization) from about:support is slow",
"priority": "P5",
"op_sys": "Unspecified",
"last_change_time": "2024-03-20T20:46:07Z",
"status": "NEW"
},
{
"id": 1506765,
"component": "DOM: Animation",
"severity": "S3",
"creation_time": "2018-11-13T04:54:48Z",
"priority": "P3",
"last_change_time": "2022-10-11T22:12:27Z",
"op_sys": "Unspecified",
"status": "NEW",
"summary": "Do an optimization to not flush animations which are running on the compositor in various places where we call FlushPendingNotification",
"keywords": [
"perf:responsiveness"
]
},
{
"component": "Tabbed Browser",
"id": 1506962,