Ok. I installed memcached, what next?

[hichew]

Ok.. I installed memcached (server) but I dont see any performance change.
How to check if the memcached server is working.

last pid: 17993; load averages: 0.00, 0.00, 0.00 up 61+00:10:09 01:09:56
11 processes: 1 running, 10 sleeping
CPU states: 0.0% user, 0.0% nice, 0.2% system, 0.1% interrupt, 99.7% idle
Mem: 35M Active, 114M Inact, 100M Wired, 16K Cache, 214M Buf, 15G Free
Swap: 2048M Total, 2048M Free

PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
42960 root 1 4 0 38364K 31304K kqread 2 166:16 0.05% memcached
625 root 1 96 0 19648K 3288K select 0 0:52 0.00% sshd
498 root 1 96 0 3636K 1176K select 0 0:11 0.00% syslogd
632 root 1 8 0 3656K 1304K nanslp 0 0:11 0.00% cron
575 root 1 96 0 2516K 1016K select 0 0:04 0.00% usbd
17891 root 1 96 0 6796K 1968K CPU0 0 0:00 0.00% top
17882 root 1 96 0 30596K 4228K select 0 0:00 0.00% sshd
17887 root 1 20 0 7152K 3136K pause 0 0:00 0.00% csh
672 root 1 5 0 3600K 1124K ttyin 1 0:00 0.00% getty
445 root 1 115 0 652K 460K select 3 0:00 0.00% devd
127 root 1 20 0 2476K 892K pause 0 0:00 0.00% adjkerntz