Audit system resource usage

1./etc/rc.d/init.d/psacct start
2.
[roo@ns /]# sa -m
405 13.38re 0.43cp 0avio 1239k
root 352 12.89re 0.35cp 0avio 1233k
mailman 9 0.19re 0.08cp 0avio 2089k
wyw 42 0.15re 0.00cp 0avio 1087k
smmsp 1 0.01re 0.00cp 0avio 1687k
sshd 1 0.13re 0.00cp 0avio 1488k