nmon

A system administrator, tuner, and benchmark tool. More information: https://manned.org/nmon.

• Start nmon:

nmon

• Save records to file (“-s 300 -c 288” by default):

nmon -f

• Save records to file with a total of 240 measurements, by taking 30 seconds between each measurement:

nmon -f -s 30 -c 240