Created attachment 733053 [details]
User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0
Build ID: 20130307122351
Steps to reproduce:
Opened some tabs, browsed normally, left it open for a week.
Memory increased to 2.4 GB or so.
Memory should have stayed constant at around .5-1 GB.
Created attachment 733055 [details]
At a glance, this part looks the most suspicious to me:
├────692,717,904 B (65.95%) -- layout
│ ├──489,972,528 B (46.65%) ── style-sets
│ ├──104,415,960 B (09.94%) ── frames
I'm not sure what "style sets" are, though.
Created attachment 733056 [details]
Created attachment 733063 [details]
Style sets are CSS stuff.
More suspicious is the fact that there are more than 30
http://www-ig-opensocial.googleusercontent.com/gadgets/ifr?exp_rpc_js=1... windows, each of which contains 3 compartments. I wonder if there's a leak there.
This is also interesting:
2,183 (100.0%) -- js-compartments
├──1,109 (50.80%) ── system
└──1,074 (49.20%) ── user
That's a lot of system compartments. Oh, but you have 44 extensions enabled! That's a lot. 621 of the system compartments have "bootstrap.js" somewhere in the name, so extensions explain that, I think.
But really, we need an about:memory diff to make sense of the increase. Roll on bug 848560...
Bug 848560 has landed. Thanks for waiting.
Can you update to the latest Nightly and use the "Write reports to a file" button at the bottom of about:memory to take measurements before and after? Thanks!
Now running the nightly, I'll upload some dumps if/when the memory usage spikes.
The memory usage has been reasonable for quite a while... closing.