As a Linux/Unix System Administrator might need to know the system load average using command, to know the server load information there are various types of commands are available in Linux/Unix system.
The following commands are helps us to display server load average,
On loadavg contain both the CPU load average and IO over time, also additional data have uptime. This load values represent in the last 1, 5 and 15 minutes, number of active and total task entities and pid.
2.47 2.74 2.97 4/370 4679
0.24 0.47 0.58
w command shows system uptime, logged user into server, system load average, IP address.
12:49:56 up 67 days, 5:17, 1 user, load average: 2.83, 2.78, 2.97
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
SkihsDijss pts/0 192.168.1.120 12:07 0.00s 0.03s 0.00s sshd: SkihsDijss [priv]
uptime command also shows current system time, uptime, logged user count, Load average.
12:47:53 up 131 days, 20:30, 5 users, load average: 2.94, 3.11, 3.20
Top command is very helpful to show all the system activity information even memory, cpu usages, cache, process id, process and others,
top - 12:48:27 up 67 days, 5:15, 1 user, load average: 2.30, 2.76, 2.99
Tasks: 278 total, 2 running, 274 sleeping, 0 stopped, 2 zombie
Cpu(s): 0.0%us, 8.7%sy, 59.0%ni, 30.6%id, 1.6%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8030928k total, 7591384k used, 439544k free, 650932k buffers
Swap: 2097144k total, 294684k used, 1802460k free, 5261476k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3255 nobody 24 4 2066m 62m 3556 S 0.0 0.8 0:01.38 /usr/local/apache/bin/httpd -k start -DSSL