Performance/Triage/Queries/General

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< Performance‎ | Triage‎ | Queries
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Untriaged

Full Query
ID Summary Status
1771902 Compositor CSS animations are not paused in fully occluded windows NEW
1826576 CSS filter() with invert() and hue-rotate() results in sluggish scrolling on Wikipedia NEW
1880287 tiktok.com - Live videos stop working after a few minutes, stuck loading NEW
1925480 Fenix shouldn't use `nsToolkitProfileService` to identify a profile folder NEW
1931716 Browser Kept Eating up RAM to the max, stopping the specific process in the task manager fix the issue temporarily. UNCONFIRMED
1931717 [meta] High OOM rate and CC time in YouTube NEW
1939354 RAM too much UNCONFIRMED
1939441 Memory larger than the total available dedicated RAM on my system by heavy amounts (around 60 GB usage total only on my Macbook) UNCONFIRMED
1940206 Garbage collection is less efficient on macOS(ARM) than on Linux(x86) UNCONFIRMED
1940667 30s of jank on parent-process doing something around getFixupURIInfo and ContentAreaDropListener.sys.mjs (resource://gre/modules/URIFixup.sys.mjs:278:18) NEW
1941608 Explore AvlTree improvements NEW
1941716 On a fresh profile, Negative heap-unclassified on "My Bugs" query on b.m.o NEW
1942031 Bad canvas performance on this example (nokiadesignarchive.aalto.fi) NEW
1943419 Fluidd memory leak UNCONFIRMED
1943503 High CPU usage on Debian x64 bookworm (VMware player guest) UNCONFIRMED
1943841 (With Ublock or "Snap links plus addon") Testcase generating 1000 iframes is 3.3x slower in Nightly and gets superlinearly slower with increase in number of iframes, uses more RAM, and memory doesnt get released fully if you reload the page NEW
1945665 airbnb.com - Attempting to enter a destination in the search by using the gboard causes the gboard to become unresponsive NEW
1946913 Consume too much memory UNCONFIRMED
1949252 Meta Messenger causing high CPU load UNCONFIRMED
1950073 www.kiwico.com - Checkout page becomes unresponsive NEW
1950901 Testcase generating N=5K forms (using credential mgmt API?) takes 30s in parent-process and 50s in content process. Chrome takes 9s. NEW
1952632 very laggy performance scrolling on some very popular websites NEW
1955077 Firefox freezes and cause Windows hang when access certain websites UNCONFIRMED
1955509 Constant CPU usage while idle on the Tiki.org website front page UNCONFIRMED
1956850 Ublock Origin increases the time to load a simple demo by 4x and uses ~3x more RAM (time spent in wrappercache, proxy, xraywrapper, minorGC and related stuff) NEW
1957692 Testcase generating N=500 forms and submitting them takes 27s in both parent and content processes,and is 675x slower than Chrome (Part2 of bug 1950901) NEW
1958480 x.com - High battery drain NEW
1958488 Sometimes (WaniKani) website would fail to load and get stuck altogether UNCONFIRMED
1958712 Testcase generating N <META> elements is 20x slower than Chrome and does weird stuff in Compositor and SceneBuilder (PAPZCTreeManager::Msg_UpdateZoomConstraints) NEW
1959837 openstreetmap iD editor - slow zooming NEW
1962001 Firefox background battery usage increased significantly 2-3 days ago UNCONFIRMED
1964374 x.com - Scroll lagging after performing a subsequent query NEW
1964744 high cpu memory youtube UNCONFIRMED
1965718 Google Maps framedrops when I'm panning the map UNCONFIRMED
1967143 firefox taking too much memory UNCONFIRMED
1967585 Excessive memory allocation when toolbar icons are updated (e.g., during downloads or extension changes) — sometimes triggers OOM killer UNCONFIRMED
1967780 Add a new OHTTP event ping to record eTLD+1 pageload performance metrics NEW
1967883 Firefox (windows) becomes unresponsive/freezes periodically. UNCONFIRMED
1970029 Firefox 139.0.1 excessively high memory and CPU usage when loading simple pages and extensions UNCONFIRMED
1970681 Stutter and lag on graphical heavy websites UNCONFIRMED
1971087 Slow & Poor Performance of Mozilla FireFox (v135) on RISC-V64 UNCONFIRMED
1972891 Extremely high memory usage (16GB) after leaving tab open for multiple hours UNCONFIRMED

42 Total; 42 Open (100%); 0 Resolved (0%); 0 Verified (0%);


Awaiting response to needinfo

Full Query
ID Summary Status
1882916 Firefox consumes a lot of CPU and makes me Mac M2 hang for a good 15 seconds UNCONFIRMED
1883669 Memory Problem UNCONFIRMED
1891345 Enourmous RAM usage (60Gig) UNCONFIRMED
1929575 since update 115.17.0esr (64 bits) my computer freezes and firefox takes 100% of the memory UNCONFIRMED
1931371 Slow poor scrolling performance when using dual monitors. UNCONFIRMED
1936166 Memory leak in mac M1 UNCONFIRMED
1948186 paramountplus stream occasionally highly unresponsive NEW
1961523 Firefox constantly freezes UNCONFIRMED
1963933 Google search results in high CPU usage and spike in temps. Happens with most of the browsers but Firefox results in higher temps spikes and CPU usage UNCONFIRMED

9 Total; 9 Open (100%); 0 Resolved (0%); 0 Verified (0%);


Recently opened bugs with performance keywords in the summary

Full Query
ID Summary Status
1970543 WebGPUChild::mSwapChainTexturesWaitingForSubmit is needlessly global NEW
1970771 10-bit video frame rendering on Mali GPU (on Google Pixel 6/7). NEW
1970829 Graphical corruption with Intel Arc dGPUs UNCONFIRMED
1970962 Rework `about:translations` front-end UI NEW
1970963 about:translations Page Accessibility Review NEW
1970971 WebGPU Vulkan presentation logic is duplicated NEW
1970976 Vulkan device creation belongs in wgpu_hal, not Firefox's wgpu_bindings NEW
1971003 Dark flash on navigation if the incoming page unsuppresses paint and then can't paint fast enough NEW
1971042 High Shared GPU memory use reported in Task Manager UNCONFIRMED
1971089 a new session overwrites the backups of the previous session too fast NEW
1971099 layout of the button bar in search engines settings does not work well with longer translations NEW
1971141 WebGPU content process should not be able to force external texture presentation NEW
1971159 GPU Process Memory Leak: Excess Memory Retained After Tab Closure UNCONFIRMED
1971250 Testcase adding N data-refs is 4x slower in Firefox compared to Chrome (N=50k). Both Firefox and Chrome are quadratic. NEW
1971266 Firefox performs duplicate requests once with http2 and once with http3 UNCONFIRMED
1971316 Testcase calling output.innerHTML += XYZ uses 5GB+ transient memory. Chrome takes ~100MB NEW
1971366 FF 138.03 text input very slow UNCONFIRMED
1971452 WebGPU hang after running pipeline_bind_group_compat CTS tests NEW
1971465 performance bug using video chat sites UNCONFIRMED
1971470 Pasting text on https://mbbill.github.io/JSC.js/demo/index.html is 3.5x slower in Firefox compared to Chrome NEW
1971505 JS-compiler demo at http://sweetjs.org/browser/editor.html is 3x slower in Nightly compared to Chrome NEW
1971523 Modified Codepen demo (https://codepen.io/carterfromsl/pen/YPXrVoL) is faster in Chrome NEW
1971612 JetStream3: dart-flute performance NEW
1971650 WebGPU: error reporting for mismatched pass begin/end does not match spec NEW
1971652 WebGPU: behavior when attempting to record a command on a finished pass does not match spec NEW
1971671 `Instance::GetPreferredCanvasFormat` and `wgpu_bindings::server` don't agree on preferred canvas format ASSIGNED
1971677 [WebGPU] Demo at https://codepen.io/cjgammon/pen/xbGYdbQ does not work on Nightly, works on Chrome NEW
1971679 [WebGPU] Continuous increase in gpu-process memory on https://codepen.io/Phil_Crowther/pen/WNYpQEd NEW
1971716 Demo at https://codepen.io/Nayab-Rani/pen/vYoxooG uses 100% CPU on Firefox, and 15% on Chrome NEW
1971823 Testcase generating N CSS class selectors is 2x slower in Firefox. REOPENED
1971860 Spidermonkey is slower on WASM GC binary-trees NEW
1971862 Spidermonkey is slower on JS binary-trees NEW
1971874 ChatGPT web page unresponsive after React TypeError: Performance.mark: Expected startTime >= 0 NEW
1971883 WebGPU content process should not be trusted to choose canvas texture format NEW
1971884 WebGPU adapter selection should log decisions to the console NEW
1971928 Demo at https://hucanco.de/dragon-rs is slower/jankier in Firefox NEW
1971937 Demo at https://codepen.io/random233/pen/BaYEwvr?editors=1000 is 2x slower in Firefox NEW
1971942 Assertion failure: gMappedMemorySizeBytes == 0, at gc/Memory.cpp:468 NEW
1972037 [wpt-sync] Sync PR 53068 - [Masonry] Update masonry-slack tests to be item-tolerance NEW
1972077 Convert Performance to config-based prefs NEW
1972090 Convert Translations to config-based prefs NEW
1972116 wasm loop unroller: correctly handle dependences through memory NEW
1972132 [Experiment] if first click on infobar primary button is fast, second click sometimes required NEW
1972157 Testcase creating N SVG-masks is 14x slower in Firefox (spending all the time in nsINode::ComputeIndexOf) NEW
1972192 Facebook videos can no longer be fast-forwarded while watching, and now YouTube too UNCONFIRMED
1972195 Could `mozilla::webgpu::ExternalTextureDMABuf` use timeline semaphores? NEW
1972255 [V-T] Artificial testcase rapidly leads to rapid memory use and OOM/system hang NEW
1972293 Testcase adding N scroll-roots is 75x slower in Firefox compared to Chrome (N=50000) NEW
1972315 Testcase resizing a png N times is 9x slower in Firefox compared to Chrome (spending a lot of time around style) NEW
1972403 Can we get SoftVision to check WebGPU Samples and such for us? NEW
1972458 very high frequency failure on ubuntu 24.04 ccov: browser/components/translations/tests/browser/browser_translations_recent_language_memory_full_page_and_select_multi_window.js NEW
1972467 TEST-UNEXPECTED-TIMEOUT ?q=webgpu:api,validation,createBindGroup:storage_texture,format:* | :storageTextureFormat="rg16float";resourceFormat="r8snorm" NEW
1972482 Minimize WebGPU header diff ASSIGNED
1972485 Bring `GPUDeviceLostInfo.reason` and `GPUDeviceLogReason` up to spec. ASSIGNED
1972486 WebGPU: ride the trains to stable 🎉 ASSIGNED
1972517 [WebGPU] Very poor texture upload performance when passing canvas NEW
1972521 [WebGPU] Out of memory error when rendering frames as fast as possible NEW
1972545 Videos on lemonde.fr have audio and video badly sync after fast forward NEW
1972586 Choose SIPHash based on CPU Arch ASSIGNED
1972624 WebGPU on Vulkan may not degrade gracefully if semaphore creation fails NEW
1972626 [Search Consolidation] Test fixes for performance issue ASSIGNED
1972628 WebGPU cornell sample doesn't display anything NEW
1972635 qwen3-webgpu is ~10x slower than Chrome NEW
1972649 Slow performance on https://downloads.scirra.com/labs/textscaling/webgl/index.html NEW
1972660 The animation to open and close the New Tab's "Customize" button is janky and not smooth. NEW
1972697 [wpt-sync] Sync PR 53221 - Use paused animation for WPT fractional translation tests NEW
1972748 [gpu-canvas] Canvas animation judders on codepen demo (https://codepen.io/fdb/pen/jbjzgY) NEW
1972749 Update wgpu to upstream 3a5d0f27 (2025-06-17) ASSIGNED
1972801 "The innerWindowId for the TranslationsParent was not available." error when running WPT NEW
1972803 AMD GPU Page Fault (likely null pointer de-referencing) UNCONFIRMED
1972856 Translation does not work on local files UNCONFIRMED
1972921 WebGPU does not display textures rendered by a compute pass NEW
1972941 file downloading is CPU-intensive UNCONFIRMED
1972949 WebGPU: A valid command buffer can be invalidated by subsequent calls on the encoder NEW

74 Total; 74 Open (100%); 0 Resolved (0%); 0 Verified (0%);

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