While trying to play a twitch.tv video, I had issues with it starting. I captured some profile runs and noticed I have a number of decoders just sitting there janking on the GPU process. I am still able to play VPx, AV1 videos, but any h264 video fails. Profiles: https://share.firefox.dev/2ZPnG03 - While trying twitch playback https://share.firefox.dev/3eVBPgC - Afterwards The first profile has some weird numbers (a 10 minute jank is shown on web conent 8/8 in a less than 1 min long profile), but I assume we can trust the janking of the decoders. I suspect the problem on my machine was not triggered by twitch, but my decoders were exhausted before then and that's when I noticed.
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While trying to play a twitch.tv video, I had issues with it starting. I captured some profile runs and noticed I have a number of decoders just sitting there janking on the GPU process. I am still able to play VPx, AV1 videos, but any h264 video fails. Profiles: https://share.firefox.dev/2ZPnG03 - While trying twitch playback https://share.firefox.dev/3eVBPgC - Afterwards The first profile has some weird numbers (a 10 minute jank is shown on web conent 8/8 in a less than 1 min long profile), but I assume we can trust the janking of the decoders. I suspect the problem on my machine was not triggered by twitch, but my decoders were exhausted before then and that's when I noticed -- this is almost certainly the case as I recall having some issues hours earlier with similar symptoms.
While trying to play a twitch.tv video, I had issues with it starting. I captured some profile runs and noticed I have a number of decoders just sitting there janking on the GPU process. I am still able to play VPx, AV1 videos, but any h264 video fails. Profiles: https://share.firefox.dev/2ZPnG03 - While trying twitch playback https://share.firefox.dev/3eVBPgC - Afterwards The first profile has some weird numbers (a 10 minute jank is shown on web conent 8/8 in a less than 1 min long profile edit: it's been pointed out that some of these numbers may be a product of when threads were created, e.g. the massive times on the decoder thread jank indicates they're been stalled for many hours), but I assume we can trust the janking of the decoders. I suspect the problem on my machine was not triggered by twitch, but my decoders were exhausted before then and that's when I noticed -- this is almost certainly the case as I recall having some issues hours earlier with similar symptoms.