1374503 - 7+ GB of heap-unclassified on nightly after resuming laptop

Status: RESOLVED INCOMPLETE

(Core :: General, defect)

Description

[Ben Kelly [:bkelly, not reviewing]]

Attachment: memory-report.json.gz

I opened my macbook pro tonight and noticed extremely sluggish behavior.  It turns out one of the content processes had 7+ GB of heap-unclassified for some reason.  This process only had 4 tabs in it:

7,866.99 MB (100.0%) -- explicit
├──7,472.84 MB (94.99%) ── heap-unclassified
├────186.11 MB (02.37%) ++ heap-overhead
├────145.11 MB (01.84%) -- window-objects
│    ├───61.85 MB (00.79%) ++ top(https://mail.google.com/mail/u/0/#inbox, id=4294967297)
│    ├───45.84 MB (00.58%) ++ top(https://twitter.com/, id=4294967301)
│    ├───24.25 MB (00.31%) ++ top(https://calendar.google.com/calendar/render?tab=mc#main_7, id=4294967355)
│    └───13.18 MB (00.17%) ++ top(https://bugzilla.mozilla.org/page.cgi?id=mydashboard.html, id=4294967299)
└─────62.93 MB (00.80%) ++ (20 tiny)

This was after refreshing the twitter tab.

Comment 1

[Ben Kelly [:bkelly, not reviewing]]

I'm not sure exactly what rev of nightly this was.  It was probably only a day or two old, though.

Comment 2

[Eric Rahm [:erahm]]

Ben, was this w/ e10s enabled? Multi or non? Was the computer plugged in or on batter? By any chance do you recall having a bunch of gcal notifications? I feel like I've seen that come up before.

The next step would be a DMD build, luckily those work on mac again.

Comment 3

[Ben Kelly [:bkelly, not reviewing]]

(In reply to Eric Rahm [:erahm] (please no mozreview requests) from comment #2)
> Ben, was this w/ e10s enabled? Multi or non? Was the computer plugged in or
> on batter? By any chance do you recall having a bunch of gcal notifications?
> I feel like I've seen that come up before.

e10s. multi=4. a/c adapter.  Not sure about gcal notifications, but probably a lot of twitter/telegram web notifications.

> The next step would be a DMD build, luckily those work on mac again.

I haven't been able to reproduce.  So not sure how long I would be willing to suffer DMD on the off chance it happens again.

Comment 4

[Eric Rahm [:erahm]]

Lets close this for now, feel free to reopen.