seems most relevant, but it's marked as Fixed in 59, and as I use that version I'm still affected.Ībout:performance listed two sites at the top:īut they were green and their respective CPU were around 0-1% while the Firefox process was 20-30%. For me the bigger issue than "huge battery impact" is that it also spins up to 20-30% of CPU which causes MBP to get quite hot. I skimmed over them and well, it looks like there is a problem but it's a bit hard to track. Possibly not replicated on Ubuntu or MacOS 10.12 * MacOS 10.13:- has high CPU & GPU load. * Investigate support for Mavericks' App Nap * Another config change you can make to improve things for now: Poor battery life on OSX with scaled resolution
* Some configuration tips and tricks to play with in this one: high GPU load and excessive power usage * Fixed in 59: High CPU Firefox 57 & 59 on Mac: Firefox 52 ESR has low CPU Some other related issues around Mac OS and CPU usage: Unless of course you think Firefox is using an abnormal amount of energy while it should be idle.īug 1430820 had a fix landed today (showing up in tomorrow's nightly i think?), which may impact power consumption for some Mac users. So I don't think it makes much sense to report spikes that are the result of some user action (or an active page running in the foreground).
All these things cause CPU usage to go up and thus energy usage too. It can run JavaScript, embed Flash, play a movie, etc. That is totally normal when you load page or when the page 'does something.
(What kind of pages are open, what is the active page, etc.) So this can be really difficult to assess without proper context. In case of a web browser it also heavily reflects the complexity and activity of the web page that is being opened or looked at. (I do not see this with Firefox 25 on a Retina MacBook Pro - But things may be different for other types of hardware) If, as the title of this bug suggests, Firefox is permanently listed in the Battery widget as a Energy Hungry app, then we indeed have a problem.
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