The following is the results of free command
total used
free shared buffers cached
Mem: 1026860 981960 44900 0
43944 315024
-/+ buffers/cache: 622992 403868
Swap: 1646620 0 1646620

Seems like swap is not being used. I guess its a good thing. Every other value
seems to be fine?

The following is the result of "w" command.
23:45:29 up 10:21, 3 users, load average: 1.89, 1.59, 1.06
USER TTY FROM
LOGIN@ IDLE JCPU PCPU WHAT
musabbir tty7 :0
13:25 10:21m 41:33 0.54s
x-session-manag
musabbir pts/0 :0.0
23:43 46.00s 0.26s 0.02s man w
musabbir pts/1 :0.0
23:45 0.00s 0.35s 0.00s w

Do you reckon these results are appropriate?