680713 - memory leak in Firefox 6.0

Status: RESOLVED DUPLICATE of bug 668809

(Firefox :: General, defect)

Description

[Chris Sutcliffe]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0) Gecko/20100101 Firefox/6.0
Build ID: 20110811165603

Steps to reproduce:

Left Firefox open for a day


Actual results:

The memory continually increased to it eventually using 1.5 GB (worst case).


Expected results:

It should not use this much memory.

Comment 1

[Matthias Versen [:Matti]]

There is not enough information in this bug.
Do you already tried this with http://support.mozilla.com/en-US/kb/Safe+Mode
Please copy about:memory if Firefox uses 1.5gb and paste it here.

Comment 2

[:aceman]

This may be a duplicate of Bug 656120 or Bug 661527. Comment if you do not think those cover your problem.

Comment 3

[Chris Sutcliffe]

I haven't been able to re-create the massive memory usage (i.e. the 1.5 GB issue I saw).  I have seen it climb to 400 MB in 'regular mode' and have seen it climb to 250 MB in 'safe mode'.  I haven't responded thus far as I am trying to make some sense of what I am seeing.  It its at all helpful, I can capture about:memory at startup and about:memory after a days worth of usage.

Comment 4

[:aceman]

You must define 'days worth of usage'. I understood the original report that you leave firefox open but do not use it (it is idle). Is that not the case?

Comment 5

[Chris Sutcliffe]

It's a combination of usage and idle time.  The instance for which I saw it using 1.5 GB of memory it was when I left it running and idle overnight.  I will test this again tonight to see if I get similar behaviour.

Comment 6

[Chris Sutcliffe]

After leaving it idle for about 7 hours today and returning to it this evening It's using 622 MB with 5 tabs (4 are app tabs, plus 1 regular tab).  The 4 app tabs are Google Reader, Google Calendar, Twitter and Hotmail.  The regular tab is the default home tab (about:home).

Main Process

Explicit Allocations
622.74 MB (100.0%) -- explicit
├──370.19 MB (59.45%) -- js
│  ├──349.00 MB (56.04%) -- gc-heap
│  ├───12.76 MB (02.05%) -- mjit-code
│  ├────5.06 MB (00.81%) -- tjit-data
│  │    └──5.06 MB (00.81%) -- (2 omitted)
│  └────3.37 MB (00.54%) -- (2 omitted)
├──190.62 MB (30.61%) -- heap-unclassified
├───49.33 MB (07.92%) -- storage
│   └──49.33 MB (07.92%) -- sqlite
│      ├──27.13 MB (04.36%) -- urlclassifier3.sqlite
│      │  ├──27.05 MB (04.34%) -- cache-used
│      │  └───0.08 MB (00.01%) -- (2 omitted)
│      ├──16.68 MB (02.68%) -- places.sqlite
│      │  ├──16.35 MB (02.63%) -- cache-used
│      │  └───0.33 MB (00.05%) -- (2 omitted)
│      └───5.51 MB (00.88%) -- (12 omitted)
├────8.63 MB (01.39%) -- images
│    ├──8.41 MB (01.35%) -- content
│    │  ├──8.41 MB (01.35%) -- used
│    │  │  ├──6.98 MB (01.12%) -- uncompressed
│    │  │  └──1.43 MB (00.23%) -- (1 omitted)
│    │  └──0.00 MB (00.00%) -- (1 omitted)
│    └──0.22 MB (00.04%) -- (1 omitted)
└────3.97 MB (00.64%) -- layout
     ├──3.97 MB (00.64%) -- all
     └──0.00 MB (00.00%) -- (1 omitted)

Other Measurements
785.75 MB -- resident
766.13 MB -- private
715.90 MB -- heap-committed
608.79 MB -- heap-used
505.21 MB -- heap-unused
  8.27 MB -- gfx-surface-win32
  5.21 MB -- shmem-allocated
  5.21 MB -- shmem-mapped
  3.13 MB -- heap-dirty
  0.00 MB -- gfx-surface-image
  0.00 MB -- gfx-d2d-surfacecache
  0.00 MB -- gfx-d2d-surfacevram
  0.00 MB -- canvas-2d-pixel-bytes

Comment 7

[Chris Sutcliffe]

I've updated to 7.0b2 since as I understand it, it's focused on these memory issues.  Interestingly enough, it seems the hotmail tab is a source of significant memory usage when left running for long periods.