Reacting more strongly to low-memory situations in Firefox 25

Bas Schouten bschouten at mozilla.com
Fri Nov 29 01:20:41 UTC 2013


----- Original Message -----
> From: "Bas Schouten" <bschouten at mozilla.com>
> To: dev-platform at lists.mozilla.org
> Cc: "David Major" <dmajor at mozilla.com>, "Nathan Froyd" <froydnj at mozilla.com>, "Firefox Dev" <firefox-dev at mozilla.org>
> Sent: Tuesday, November 26, 2013 1:15:44 AM
> Subject: Re: Reacting more strongly to low-memory situations in Firefox 25
> 
> 
> ----- Original Message -----
> > From: "Benjamin Smedberg" <benjamin at smedbergs.us>
> > To: dev-platform at lists.mozilla.org, "Bas Schouten" <bschouten at mozilla.com>,
> > "David Major" <dmajor at mozilla.com>,
> > "Nathan Froyd" <froydnj at mozilla.com>, "Firefox Dev"
> > <firefox-dev at mozilla.org>
> > Sent: Monday, November 25, 2013 5:02:50 PM
> > Subject: Reacting more strongly to low-memory situations in Firefox 25
> > 

...

> > 
> > == Graphics Solutions ==
> > 
> > The issues reported in bug 930797 at least appear to be related to HTML5
> > <video> rendering. The STR aren't precise, but it seems that we should
> > try and understand and fix the issue reported by that user. Disabling
> > hardware acceleration does not appear to help.
> > 

...

> 
> For what it's worth, just to add some info to this, in my own experience on
> my machines in most cases Firefox seems to climb to about 1.1-1.3 GB of
> memory usage fairly quickly (i.e. < 2 days of keeping it open), and sort of
> stabilize around that number. Usually when I do an about memory in this case
> my memory reports about 500 MB+ in JS, a surprising amount (150 MB) in VRAM
> usage for DrawTargets (this would be in our address space on the affected
> intel machines), we should investigate the latter. This is usually with
> about 20 tabs open.

I've filed a bug for the latter part of this (the higher than expected DrawTarget memory usage), bug 944562. I'll look into it there. Although I don't think the number's high enough to cause a lot of trouble. I don't understand it and would like to.

Best regards,
Bas



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