systat -- display system statistics Lots of things whats going on can be seen. Se man page

Examples

==Traffic in/out

[root@mars ~]#<input>systat -ifstat 2</input>

Interface status - refresh every 2 seconds.

                    /0   /1   /2   /3   /4   /5   /6   /7   /8   /9   /10
     Load Average

      Interface           Traffic               Peak                Total
            lo0  in      0.000 KB/s          0.000 KB/s          331.698 MB
                 out     0.000 KB/s          0.000 KB/s          331.741 MB

            vr1  in      0.116 KB/s          0.278 KB/s            2.662 GB
                 out     0.356 KB/s          1.074 KB/s            3.245 GB

            em1  in      0.116 KB/s          0.116 KB/s            3.868 GB
                 out     0.000 KB/s          0.000 KB/s            1.558 GB

            em0  in      0.000 KB/s          0.000 KB/s            1.196 GB
                 out     0.000 KB/s          0.000 KB/s            3.981 GB

Pigs - CPU idle and processes consuming a lot of CPU time

[root@mars ~]#<input>systat -pigs 2</input>

<source lang=cli

                   /0   /1   /2   /3   /4   /5   /6   /7   /8   /9   /10
    Load Average

                   /0%  /10  /20  /30  /40  /50  /60  /70  /80  /90  /100

root idle: cpu3 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX root idle: cpu1 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX root idle: cpu0 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX root idle: cpu2 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX www httpd XX </source>

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Systat FreeBSD

Examples

Pigs - CPU idle and processes consuming a lot of CPU time