HVTA [cnttbachkhoa]

Ubuntu linux has a rich set of commands for getting system info. One  of the useful pieces of information that a system administrator might  need is to know what the overall system load on a server is.

There are a couple of ways to get this information, which may or may  not be enabled on your system. It’s useful to know more than one way to  get the uptime information in case the commands are disabled on your  shared hosting server.

uptime

The uptime command gives information on system load averages for the  past 1, 5, and 15 minutes:

Example:

[root@ubuntu geek]# uptime
05:59:07 up 87 days, 13:13,  1 user, load average: 0.00, 0.00, 0.39

w

The w command shows who is logged on and what they are doing,  including system load averages for the past 1, 5, and 15 minutes.

[root@ubuntu geek]# uptime
05:59:56 up 87 days, 13:13,  1 user, load average: 0.00, 0.00, 0.39
USER TTY FROM LOGIN@ IDLE  JCPU PCPU WHAT
geek pts/0 192.168.1.115 6:31pm 0.00s 0.62s 0.03s  /usr/sbin/sshd

/proc/loadavg

The /proc/loadavg file contains information on the system load. Most  likely the uptime/w commands utilize this information. The first 3  values contain system load averages for the past 1, 5, and 15 minutes.

[root@ubuntu geek]# cat /proc/loadavg
0.00 0.00 0.39  1/49 15352

There are probably some more commands, but these are the ones off the  top of my head that I know of.