OLha as informações somente com firefox aberto:
top - 18:03:18 up 33 min, 2 users, load average: 2,43, 1,00, 0,61
Tarefas: 219 total, 4 running, 215 sleeping, 0 stopped, 0 zombie
%Cpu(s): 21,2 us, 5,7 sy, 0,0 ni, 73,0 id, 0,0 wa, 0,0 hi, 0,0 si, 0,0 st
KiB Mem: 8089692 total, 1683536 used, 6406156 free, 56776 buffers
KiB Swap: 8299800 total, 0 used, 8299800 free, 769784 cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2235 notebook 20 0 511m 58m 25m R 154,0 0,7 2:25.07 plugin-containe
1168 root 20 0 121m 22m 6024 S 21,6 0,3 2:38.11 Xorg
1987 notebook 20 0 1051m 284m 39m R 16,9 3,6 6:59.67 firefox
1731 notebook 20 0 1234m 79m 28m S 7,3 1,0 0:45.84 compiz
2262 notebook 20 0 510m 20m 11m S 7,0 0,3 0:08.81 gnome-terminal
2886 root 20 0 0 0 0 S 1,0 0,0 0:00.52 kworker/u:0
58 root 20 0 0 0 0 S 0,3 0,0 0:00.24 kworker/1:1
117 root 20 0 0 0 0 R 0,3 0,0 0:00.87 kworker/6:1
2346 root 20 0 0 0 0 S 0,3 0,0 0:00.90 kworker/0:2
2904 root 20 0 0 0 0 S 0,3 0,0 0:00.06 kworker/u:1
2923 notebook 20 0 24848 1688 1184 R 0,3 0,0 0:00.15 top
1 root 20 0 24568 2492 1372 S 0,0 0,0 0:00.86 init
2 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kthreadd
3 root 20 0 0 0 0 S 0,0 0,0 0:00.26 ksoftirqd/0
5 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kworker/0:0H
7 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kworker/u:0H
8 root rt 0 0 0 0 S 0,0 0,0 0:00.02 migration/0