I filed bug 1523974 to track this class of problem. On 2019-01-30 11:44 a.m., Gabriele Svelto wrote: > On 30/01/19 17:26, Mike Conley wrote: >> That's a good question. I haven't yet noticed any difference yet, but >> I'm hoping people can keep an eye out to see if there's appreciable lag >> when switching back to a tab with video, or if background audio starts >> to stutter. >> >> (I suspect that even if we don't hear any reports, it might be better to >> be safe than sorry, and mark any background tabs that are playing media >> as "active" - I'll file a bug.) > > The process priority manager already has a concept of "perceivable tabs" > (i.e. ones that are playing some form of audio) and assigns them a > higher priority compared to non-playing background ones. Unfortunately > the Windows-specific mapping of those priorities lumps them together > because Windows has only one background scheduling class. However if we > run into problems like skipping or jittering audio it will be trivial to > put them back in the normal priority class. > > Gabriele >
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