Kelsey Gilbert [:jgilbert] Reporter
	Description • 12 years ago

I could be very useful to web apps to know when we are using too much memory, such that we're at risk of being killed.

One idea is to provide a 'low memory' event via a JS page event, which could allow an app to free any spare memory and/or scale back its memory usage. An app could unlink spare objects it doesn't need anymore. After returning from this event, JS could GC/CC (as normal for memory pressure events, I think) to free whatever memory the page could spare.

With this API, a page would be able to respond to dangerous levels of memory use. Currently, if an app uses a lot of memory on mobile, it risks the OS axing the browser for using too much memory.

	Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)
	Comment 1 • 12 years ago

Yeah, good idea; we already have some of the data, so we should be able to expose it to web apps.  Useful for more than just games, too.

	David Bruant
	Comment 2 • 11 years ago

It'd be good to check with other browsers on standard mailing-lists before proceeding.
The WHATWG mailing list sounds like a good fit for this sort of feature.
http://lists.whatwg.org/listinfo.cgi/whatwg-whatwg.org

	Chris Peterson [:cpeterson]
	Comment 3 • 11 years ago

Low memory notifications would also be useful for B2G apps.