Hey Valentin, 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.) -Mike On 2019-01-30 11:24 a.m., Valentin Gosu wrote: > On Tue, 29 Jan 2019 at 20:33, Mike Conley <mcon...@mozilla.com > <mailto:mcon...@mozilla.com>> wrote: > > (cross-posted to dev-platform and firefox-dev) > > Hi folks, > > Just a heads up that in bug 1476981 > <https://bugzilla.mozilla.org/show_bug.cgi?id=1476981>, I just > autolanded a patch that, when hopefully merged, will enable the > Process Priority Manager for Firefox Desktop on Nightly on Windows. > > The Process Priority Manager lowers the OS-level process priority > for any content processes that host /only/ background tabs. As soon > as one tab in a content process is brought to the foreground, the > priority is brought back to the normal level. > > This should allow foreground tabs to get more CPU cycles dedicated > to them, which we hope will let users get more things done more > quickly in those foreground tabs. > > The pref is holding on Nightly to help us shake out bugs. If you > notice any, bug 1522879 > <https://bugzilla.mozilla.org/show_bug.cgi?id=1522879> is the right > metabug to block. > > If you have questions or concerns, please respond to this thread on > dev-platform (to centralize the conversation). > > > Do we know if this will impact video or audio playing in the background > tabs?
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