Install sar, sadf, mpstat, iostat,
pidstat and sa tools on CentOS / RHEL
Type the following command from root
privilege users:
[root@linuxcnf ~]#yum install sysstat
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These are essential utilities to find
out about IO load on system and ways to combat it.
[root@linuxcnf ~]# mpstat 2
Linux 3.10.0-229.el7.x86_64
(localhost.linuxcnf)
03/19/2016 _x86_64_
12:21:45 AM CPU
%usr %nice %sys %iowait %irq
%soft %steal %guest
%
12:21:47 AM all
0.00 0.00 0.50
0.00 0.00 0.00
0.00 0.00
12:21:49 AM all
0.50 0.00 1.50
0.00 0.00 0.50
0.00 0.00
12:21:51 AM all
0.00 0.00 0.50
0.00 0.00 0.00
0.00 0.00
12:21:53 AM all
0.00 0.00 0.50
0.00 0.00 0.00
0.00 0.00
12:21:55 AM all
0.00 0.00 1.01
0.00 0.00 0.00
0.00 0.00
12:21:57 AM all
0.00 0.00 0.50
0.00 0.00 0.00
0.00 0.00
12:21:59 AM all
0.00 0.00 0.51
0.00 0.00 0.00
0.00 0.00
12:22:01 AM all
0.53 0.00 6.88
17.46 0.00 0.00
0.00 0.00
12:22:03 AM all
1.05 0.00 4.71
11.52 0.00 0.00
0.00 0.00
12:22:05 AM all
0.51 0.00 0.51
0.00 0.00 0.00
0.00 0.00
12:22:07 AM all
0.00 0.00 0.51
2.02 0.00 0.00
0.00 0.00
12:22:09 AM all
0.00 0.00 0.00
0.00 0.00 0.00
0.00 0.00
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