[Webkit-unassigned] [Bug 236081] [WPE][GStreamer] Increased CPU usage on new window.AudioContext()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=236081

--- Comment #3 from Bastian Krause <bst at pengutronix.de> ---
I think my comparison with 2.30.x is misleading. It seems that the GStreamer pipeline might have been constructed at a different point in time then (not on window.AudioContext()).

On wpewebkit 2.34.4 with gstreamer 1.20, I see less CPU load compared to wpewebkit 2.32.3 with gstreamer 1.18.3. It is still half of the overall CPU load from the WPEWebProcess, which is at ~50% (htop) on this SoC.

For testing purposes, I've reverted the "audiointerleave" element to "interleave" (https://bugs.webkit.org/show_bug.cgi?id=211124).
I've also added a GStreamer "queue" element between the "webaudioSrc" elements and "interleave". With this, the main load is on the 2 "queue" elements. This probably means that my issue happens somewhere downstream (audioconvert/audioresample/alsasink), right? So I guess WPE has nothing to do with it.

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