Show all statistics for current day:

sar -<option>

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 | awk '!/Average|Linux/'; 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 | awk '!/Average|Linux/'; 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 | awk '!/Average|Linux/'; done