Firefox needs too much memory

[Olivier Pavilla]

I have ubuntu natty 64 bits. I have 4GB of RAM and swap 8GB.
So I h ave trouble with memory. It seems Firefox takes too much memory.
Look my "top"
Eventhough I stop firefox and run it again. It takes much memory.

dankin at coruscan:~$ top

top - 14:15:37 up  2:38,  2 users,  load average: 2.92, 3.78, 3.04
Tasks: 217 total,   2 running, 212 sleeping,   0 stopped,   3 zombie
Cpu(s):  9.9%us, 13.0%sy,  0.0%ni,  2.8%id, 73.4%wa,  0.0%hi,  1.0%si,
0.0%st
Mem:   4050788k total,  4017976k used,    32812k free,     1956k buffers
Swap:  7999484k total,  2985696k used,  5013788k free,   207780k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND

 2263 dankin    20   0  339m 6556 2860 S    8  0.2   2:41.39 compiz

 4972 root      20   0     0    0    0 R    7  0.0   0:03.92 kworker/0:0

 1374 root      20   0  211m  18m 4068 S    7  0.5   6:42.55 Xorg

 3471 dankin    20   0 1268m 113m  17m S    6  2.9   1:01.19
thunderbird-bin
   27 root      20   0     0    0    0 S    6  0.0   0:21.37 kswapd0

 4754 root      20   0     0    0    0 S    4  0.0   0:17.27 kworker/0:3

 4979 root      20   0     0    0    0 S    3  0.0   0:03.86 kworker/1:4

 2793 dankin    20   0  466m  26m 4340 S    2  0.7   2:34.60
chromium-browse
 4573 root      20   0     0    0    0 S    2  0.0   0:14.67 kworker/1:2

 4854 dankin    20   0  497m 9940 5544 S    1  0.2   0:01.20
gnome-terminal
 4974 dankin    20   0  528m  15m 8248 S    1  0.4   0:11.44
gnome-system-mo
 2235 dankin    20   0 26652 1824  416 S    1  0.0   0:03.39 dbus-daemon

 3396 dankin    20   0 4739m 2.7g 2020 D    1 69.2  28:49.84 firefox

  230 root      20   0     0    0    0 S    0  0.0   0:01.58 kworker/u:4

 2291 dankin    20   0 74332  672  612 S    0  0.0   0:00.06
gvfs-afc-volume
 2395 dankin    20   0  449m 3580 2308 S    0  0.1   0:03.87
cpufreq-applet
 2514 dankin    20   0  405m 7748 2920 S    0  0.2   0:09.42
gwibber-service
 2622 dankin    20   0 1443m  38m  11m S    0  1.0   3:22.72
chromium-browse
 4583 dankin    20   0  365m 6800 1864 S    0  0.2   0:05.71
ubuntuone-syncd
 4962 dankin    20   0 19468  896  564 R    0  0.0   0:01.37 top

    1 root      20   0 24140  808  312 S    0  0.0   0:00.83 init

    2 root      20   0     0    0    0 S    0  0.0   0:00.00 kthreadd

    3 root      20   0     0    0    0 S    0  0.0   0:02.47 ksoftirqd/0

    6 root      RT   0     0    0    0 S    0  0.0   0:00.00 migration/0

    7 root      RT   0     0    0    0 S    0  0.0   0:00.00 migration/1

    9 root      20   0     0    0    0 S    0  0.0   0:01.00 ksoftirqd/1

   11 root       0 -20     0    0    0 S    0  0.0   0:00.00 cpuset

   12 root       0 -20     0    0    0 S    0  0.0   0:00.00 khelper

   13 root       0 -20     0    0    0 S    0  0.0   0:00.00 netns

   15 root      20   0     0    0    0 S    0  0.0   0:00.02 sync_supers

   16 root      20   0     0    0    0 S    0  0.0   0:00.00 bdi-default


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