Question

sar
Cannot open /var/log/sa/sa01: No such file or directory
Please check if data collecting is enabled

Answer

Need to pass arguments

sar -q 2 5
Linux 3.10.90 (rlx-linux) 	11/01/23 	_mips_	(1 CPU)

13:44:33      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15   blocked
13:44:35            3        49      0.35      0.43      0.35         0
13:44:37            1        49      0.35      0.43      0.35         0
13:44:39            0        49      0.48      0.45      0.36         0
13:44:41            0        49      0.48      0.45      0.36         0
13:44:43            0        49      0.48      0.45      0.36         0
Average:            1        49      0.43      0.44      0.36         0