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Firefox Profiler — Web app for Firefox performance analysis

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Profile: https://share.firefox.dev/3NdoSjR Steps to reproduce: 1. In the Renderer thread timeline, find any "Composite" marker, and move your mouse slightly to the right so that you're over a "Render reason...

Example profile: https://share.firefox.dev/3w7G2K2 There's only one marker in this (filtered) marker chart. If I click "End selection at marker's end" in the context menu, the marker disappears. If I move...

markers

Testcase: https://profiler.firefox.com/from-url/https%3A%2F%2Fgist.githubusercontent.com%2Fmstange%2F6c77ac541d596790f71249cd7c350fb8%2Fraw%2Ffbf70c9e5cd18454c02e356cc618b161ae72b15a%2Fcargo_cargo_query-api.profile.json/ There should be 3 processes with 4 threads in total, but only one process and a total of two threads is displayed. In profiles that have multiple processes...

bug
timeline

If CPU deltas are given in microseconds, but all samples have cpuDelta < sampleTimeDelta, then we display incorrect CPU percentages: We make it look like the CPU usage was higher...

:smaug mentioned in our Matrix channel that quite often people have copy-pasted the url from the location bar instead of using the share button and sharing the permalink. We do...

polish
homepage

This is part of the overall work with: #2764 ## Example usage: * Right click a memory track * Choose "Hide all memory tracks" * All memory track should be...

polish
timeline
good first issue

I'm using Firefox 99.0.1 . Right now I have the problem that I can’t record profiles for a long time in Firefox (< 10s) anymore, when recording audio workload. It...

Even though I know the context menu letting me show or hide a track from the same process is only available when I context-click on the track name, I keep...

polish
timeline

Right now this seems viable in the DevTools recording panel mode. I think we should hold off on retaining source maps in the Gecko Profiler Addon, due to complexities of...

feature
profile data
unified profiler

When capturing profiles of local Firefox builds, or of other applications with local source code, we lose access to that source code once the profile is uploaded and shared. To...