Created attachment 733053 [details] aboutmemory_censored 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. Actual results: Memory increased to 2.4 GB or so. Expected results: Memory should have stayed constant at around .5-1 GB.
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.
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.