Wed Jul 17 2024 20:49:45 PDT
  • Resolution: ---
  • Keywords: perf:pageload
97 bugs found.
ID Type Summary Product Comp Assignee▲ Status▲ Resolution Updated
1870405 Very slow time to first page load when opening Fenix with hundreds of tabs Fenix Performance nobody UNCO --- 2024-05-22
1809608 specific page leads to 100% cpu with webrender software Core Graphics: WebRender nobody UNCO --- 2023-08-04
1840252 YouTube takes 7 s to shows cookie banner Core Performance nobody UNCO --- 2024-04-09
1842382 Memory leak when SVG sprites are loaded (3300 SVGs) Core Graphics: ImageLib nobody UNCO --- 2023-10-20
1664492 Extremely long DNS resolution times with Fenix Core Networking: DNS nobody NEW --- 2024-07-09
1819286 Firefox slows down abysmally after a week or so, having hundreds of tabs open (thousands of tabs in total) Core Widget: Win32 davidp99 NEW --- 2024-06-13
1809944 Major page initial load slowdowns on multiple devices without addons, except in private browsing Fenix Performance mleclair NEW --- 2024-06-18
1505192 twitch.tv site loads slow compared to Chrome Core JavaScript Engine nobody NEW --- 2022-10-11
1522196 InitOtherFamilyNamesRunnable can slow down first page load and take > 100ms Core Layout: Text and Fon nobody NEW --- 2022-10-11
1528285 [meta] Allow call of AsyncOpen and OnStart/OnStopRequest off the main thread Core Networking: HTTP nobody NEW --- 2023-06-30
1543776 [meta] 5+ second delays seen while loading www.allrecipes.com on geckoview_example Core Performance nobody NEW --- 2024-04-08
1548539 Stopping blocking bfcache on unconnected peerconnections Core WebRTC nobody NEW --- 2022-10-11
1583220 Visual metrics: Fenix is significantly slower than Chrome for the site https://cnn.com Core Performance nobody NEW --- 2024-04-08
1583222 Visual metrics: Fenix is significantly slower than Chrome for the site https://www.reddit.com Core Performance nobody NEW --- 2024-04-08
1598384 13 seconds of jank when loading https://data.firefox.com/dashboard/hardware Core JavaScript Engine nobody NEW --- 2022-10-11
1611279 Identify Mozilla libraries built for Android that could be built with optimizations for speed Core Performance nobody NEW --- 2023-07-12
1613824 Apple Newsroom page takes a long time to load (30 seconds) Core Performance nobody NEW --- 2024-04-08
1614425 https://www.fido.ca/ Pages load on mobile is several seconds slower than chrome Core Performance nobody NEW --- 2024-04-08
1650708 Firefox takes 50% more time than Chrome to load/reload pages on Boardgamegeek Core Performance nobody NEW --- 2024-04-08
1667246 Fenix loads apple.com 2 seconds slower than Chrome GeckoView General nobody NEW --- 2024-04-08
1667250 Fenix loads adobe.com 4 seconds slower than Chrome Core Performance nobody NEW --- 2022-03-02
1719556 qatarairways.com is slow to load in Firefox on Android Core Performance nobody NEW --- 2024-04-08
1731514 Extreme memory surge when opening a certain pdf-file Firefox PDF Viewer nobody NEW --- 2024-05-02
1778472 Firefox startup extremely slow after reboot (24 seconds wait in Web Extensions process from mozilla::dom::LSObject::EnsureDatabase) Core Storage: Quota Manag nobody NEW --- 2024-05-30
1827906 High memory usage and slow/jerky text size increase animation on https://www.sbnation.com/a/17776-football Core Graphics: WebRender nobody NEW --- 2024-03-22
1839322 TransmitPermissionsAndBlobURLsForPrincipalInfo blocks the main thread Core DOM: File nobody NEW --- 2023-06-29
1570090 Investigate fast first paints Core Performance smaug NEW --- 2022-10-11
1722641 Performance regressions from turning on bfcache-in-parent for fission, mostly in warmload Core DOM: Navigation smaug NEW --- 2023-01-09
1348469 Consider using FramePropertyTable less in layout Core Layout nobody NEW --- 2022-10-11
1374382 Consider to process DOMLinkAdded event using animation frame callback + setTimeout(, 0) Core Performance Engineer nobody NEW --- 2024-03-27
1468246 High variability in performance testing with large images Core Layout nobody NEW --- 2022-10-11
1503119 A lot of time spent in query_selector Core DOM: CSS Object Mode nobody NEW --- 2022-10-11
1503371 Large local files with many pictures load extremely slow Core Performance nobody NEW --- 2022-10-24
1508765 Firefox is very slow to render poster PDF Firefox PDF Viewer nobody NEW --- 2023-07-24
1509228 Optimizing nsGlobalWindowOuter::NotifyContentBlockingState() seems to have an impact on pageload Core DOM: Core & HTML nobody NEW --- 2022-10-11
1515414 Defer GCs in background tabs/processes during pageload Core JavaScript: GC nobody NEW --- 2022-10-11
1554313 Classifier Update should wait for an user-idle period before initiating an update Toolkit Safe Browsing nobody NEW --- 2022-10-11
1557505 ECPoint_mul/ec_points_mul take a lot of time on Arm32 NSS Libraries nobody NEW --- 2022-10-11
1570750 gfxFontGroup::FindFontForChar took a lot of time during reflow Core Layout: Text and Fon nobody NEW --- 2024-04-08
1572540 GV should disable logging by default in opt GV builds GeckoView General nobody NEW --- 2022-12-22
1599472 Stream the output of inflate in nsHTTPCompressConv::OnDataAvailable out to another thread to be converted to UTF16 when possible Core DOM: Networking nobody NEW --- 2022-10-11
1599489 For large json payloads, convert to UTF16 off the main thread Core DOM: Networking nobody NEW --- 2022-10-11
1599508 Enabling Safebrowsing is introducing significant noise in network throttled pageload tests Core Performance nobody NEW --- 2022-10-11
1602025 Browsing from about:blank to a URL runs activity-stream code and does an about:newtab reflow Firefox New Tab Page nobody NEW --- 2022-10-11
1603578 Implement caching of retired web-isolated processes for reuse in the same domain in Fission Core DOM: Navigation nobody NEW --- 2022-10-11
1608826 [meta] Geckoview load initiation performance GeckoView General nobody NEW --- 2023-10-11
1609682 preload required content and parent process scripts at startup of GeckoView GeckoView General nobody NEW --- 2024-05-02
1641696 Firefox takes 50% more time than Microsoft Edge to display first paint of comments in reddit posts Core Networking nobody NEW --- 2023-03-08
1656386 Slow loading of Medium article on Moto G (XT1031) Core Performance nobody NEW --- 2024-04-08
1663768 9to5google article takes 2x as much time to load as Chrome Core Performance nobody NEW --- 2024-04-08
1667248 Fenix loads cloudflare.com 5 seconds slower than Chrome Core Performance nobody NEW --- 2022-04-07
1676889 http requests to localhost ports where nothing is listening take longer to fail than in blink Core Networking nobody NEW --- 2022-03-02
1681088 Consider making speculative connections to minimize redirection time Core Performance nobody NEW --- 2022-04-07
1712784 Creating GeckoSessions and loading URLs from non-main threads GeckoView General nobody NEW --- 2023-01-26
1723891 outlook.live.com responsiveness login is bad at login time Core JavaScript Engine nobody NEW --- 2022-03-08
1733307 natursteine-rath.at - Very slow page load Core Performance nobody NEW --- 2022-04-07
1734490 Fenix loads fonts later than Chrome on aa.com.tr Core Performance nobody NEW --- 2022-06-26
1745512 Significant performance impact when using Webpagetest and ES Modules Core JavaScript Engine nobody NEW --- 2024-05-28
1761734 Slow drawing of this PDF file Firefox PDF Viewer nobody NEW --- 2022-12-08
1767103 Fenix page load is slower when using enhanced tracking protection Core Privacy: Anti-Tracki nobody NEW --- 2024-06-04
1811843 content loads extremely slow on accenture.com in ETP strict Core Privacy: Anti-Tracki nobody NEW --- 2023-08-04
1827132 ~12 seconds loading this HTML page, Chrome is fine Core DOM: Core & HTML nobody NEW --- 2023-05-31
1828961 50% slower than Chrome loading this Google Sheet with graphs Core JavaScript Engine nobody NEW --- 2023-05-17
1834706 www.boredpanda.com - Homescreen app is laggy when installed to the home screen GeckoView General nobody NEW --- 2024-05-14
1875307 The "View in map" image place holder loads slower compared to Chrome at expedia.com Core Performance nobody NEW --- 2024-06-06
1897427 fales.itch.io - The game is stuck in a loading state Web Compatibility Site Reports nobody NEW --- 2024-06-03
1540683 Investigate performance impact of tuning the number of SSL Cert threads on low-end hardware Core Performance sefeng NEW --- 2022-10-11
1504337 Consider if it makes sense to use HTTP1.1 on cellular connections Core Performance nobody NEW --- 2022-10-11
1582525 Avoid racing 6 connections for sites known to have been HTTP2 in the past Core Networking nobody NEW --- 2022-03-02
1686983 The print preview takes minutes to display for pages that contain images that failed to load Core Print Preview jwatt NEW --- 2024-04-04
613498 Very slow chrome to content DOM access Core XPConnect nobody NEW --- 2022-10-10
651049 Write a new off-the-main-thread IO driver for expat Core XML nobody NEW --- 2023-08-22
1027106 Make ImageLib share cached imgRequests for the same SVG document even if the URI has a different ref/hash Core Graphics: ImageLib nobody NEW --- 2023-12-04
1554395 StartupCache takes a very long time to write out cache after browser startup Core XPCOM nobody NEW --- 2024-06-18
1650063 Loading https://www.worldometers.info/coronavirus/#countries is occasionally slow, takes lots of time in query_selector_slow Core CSS Parsing and Comp nobody NEW --- 2022-03-02
1659166 Very long reflows on Wikipedia Barack Obama page Core Layout: Columns nobody NEW --- 2023-08-14
1659831 Geektyrant takes 4x as long as Chrome to load Core Layout: Grid nobody NEW --- 2023-07-04
1725781 SAP application very slow since 72.0b1, with deeply nested percent-height tables Core Layout: Tables nobody NEW --- 2024-03-05
1773543 www.aa.com.tr/tr loads more slowly than Chrome Core Performance nobody NEW --- 2024-04-08
1779363 Large performance difference when loading a PDF in "performance" vs "energy saving" mode Core Performance nobody NEW --- 2023-01-17
1801478 Long site hang when searching on https://support.hp.com/ Core CSS Parsing and Comp nobody NEW --- 2022-12-01
1803464 querySelectorAll is slower in Firefox as compared to Chrome and Safari Core DOM: CSS Object Mode nobody NEW --- 2022-12-01
1810370 Focus gives a "running in the background" notification in Task Switcher and uses lots of CPU in background Focus General nobody NEW --- 2024-03-26
1812394 High parent-process CPU usage, with animated balloons SVG background-image Core Graphics: WebRender nobody NEW --- 2024-04-02
1813325 Pdf.js UI is very sluggish with a specific pdf Core Web Painting nobody NEW --- 2024-05-22
1814028 The slow script warning notification bar appears on www.sanwa.co.jp Core Performance nobody NEW --- 2023-03-02
1833208 Consider coalescing nested nsInlineFrame instances, for deeply-nested subtrees of unstyled display:inline elements Core Layout: Block and In nobody NEW --- 2023-05-16
1833212 We can hit many redundant-seeming `nsIFrame::SchedulePaint` calls after painting has been unsuppressed, in resumed initial reflow of a deeply-fragmented tree Core Layout nobody NEW --- 2023-05-15
1840656 Loading a testcase with 1000 css files is 2x faster on Chrome compared to Nightly Core CSS Parsing and Comp nobody NEW --- 2023-12-04
1878133 PDF takes excessively long to render with hardware acceleration enabled Core Graphics: Canvas2D nobody NEW --- 2024-06-19
1884394 Frequent inability to use 'back' Fenix Toolbar nobody NEW --- 2024-05-27
1899405 systemui spends a bunch of time painting gradients during page load Fenix General nobody NEW --- 2024-07-11
1522282 Delayed image loading on low end ARM devices Core Performance sefeng ASSI --- 2023-02-22
1543783 m.facebook.com live site loads 1s slower in Fenix/GVE than Fennec 64 Core Performance sefeng ASSI --- 2024-04-08
1135277 Pathologically slow pdf rendering Firefox PDF Viewer nobody REOP --- 2023-05-29
1518677 Avoid collection during page load Core JavaScript: GC nobody REOP --- 2022-10-11
1720068 3.95 - 3.85% wikipedia SpeedIndex / wikipedia FirstVisualChange + 1 more (Linux) regression on Fri June 25 2021 Core Layout: Text and Fon nobody REOP --- 2022-03-02
97 bugs found.
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