Syntax:    sar <time innterval sec> <number of reports after time interval>

$ sar 5 5
Linux 2.6.32-504.54.1.el6.x86_64 (AESFRV) 03/07/2017 _x86_64_ (64 CPU)

09:59:23 AM CPU %user %nice %system %iowait %steal %idle
09:59:28 AM all 0.60 0.00 3.19 0.71 0.00 95.51
09:59:33 AM all 0.37 0.00 3.11 0.38 0.00 96.14
09:59:38 AM all 0.37 0.00 3.32 0.25 0.00 96.06
09:59:43 AM all 0.28 0.00 3.06 1.02 0.00 95.64
09:59:48 AM all 0.30 0.00 3.65 14.64 0.00 81.41
Average: all 0.38 0.00 3.27 3.40 0.00 92.95