sar_commands []

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Show all statistics for current day:

        
              sar -<option>

Show statistics 3 times with 1 second interval

        
              sar -<option> 1 3

Show CPU statistics 3 times with 1 second interval, (focus on the last field “%idle” to see the cpu load):

        
              sar 1 3

        
              sar -u 1 3

        
              sar -q

        
              sar -S

Select a specific time during the day:

        
              sar -<option> -s 10:30:00

        
              sar -q -f /var/log/sa/sa23 -s 10:00:01

        
              sar -p | grep -A5 "07:45"

Change the value 4 to the number of CPUs you have

        
              sar -q | awk '$5 > 4'

        
              for i in $(ls -tr /var/log/sa/sa[0-9][0-9]); do echo $(ls -l $i); sar -r -f $i | awk '$4 > 98.8'; done

        
              for i in $(ls -tr /var/log/sa/sa[0-9][0-9]); do echo $(ls -l $i); sar -u -f $i | awk '$8 > 20'; done

        
              for i in $(ls -tr /var/log/sa/sa[0-9][0-9]); do echo $(ls -l $i); sar -q -f $i | awk '$5 > 1'; done