Issue

• Why does sar not able to interpret sar files in Red Hat Enterprise Linux 6?

[root@test sa]# cd /var/log/sa/
[root@test sa]# ll
total 5700
-rw-r--r-- 1 root root 313584 Dec 23 23:50 sa23
-rw-r--r-- 1 root root 313584 Dec 24 23:50 sa24
-rw-r--r-- 1 root root 313584 Dec 25 23:50 sa25
-rw-r--r-- 1 root root 313584 Dec 26 23:50 sa26
-rw-r--r-- 1 root root 313584 Dec 27 23:50 sa27
-rw-r--r-- 1 root root 313584 Dec 28 23:50 sa28
-rw-r--r-- 1 root root 313584 Dec 29 23:50 sa29
-rw-r--r-- 1 root root 313584 Dec 30 23:50 sa30
-rw-r--r-- 1 root root 141680 Dec 31 10:40 sa31
-rw-r--r-- 1 root root 341169 Dec 22 23:53 sar22
-rw-r--r-- 1 root root 341170 Dec 23 23:53 sar23
-rw-r--r-- 1 root root 341169 Dec 24 23:53 sar24
-rw-r--r-- 1 root root 341170 Dec 25 23:53 sar25
-rw-r--r-- 1 root root 341169 Dec 26 23:53 sar26
-rw-r--r-- 1 root root 341205 Dec 27 23:53 sar27
-rw-r--r-- 1 root root 341179 Dec 28 23:53 sar28
-rw-r--r-- 1 root root 341171 Dec 29 23:53 sar29
-rw-r--r-- 1 root root 341170 Dec 30 23:53 sar30
[root@test sa]# 
[root@test sa]# 
[root@test sa]# which sar
/usr/bin/sar
[root@test sa]# sar -f ./sar29
Invalid system activity file: ./sar29 (0x6e65)
[root@test sa]# 
[root@test sa]# sar -f ./sar23
Invalid system activity file: ./sar23 (0x6e65)
[root@test sa]#