Install iostat and mpstat

During data synchronization and transmission today, if you want to use the iostat command to monitor the I/O status of the disk, this package cannot be found. This package is not installed by default. Haha, there is no way to install it on your own.
 
[Root @ testhost ~] # Iostat
-Bash: iostat: command not found

Find the sysstat package in the system disk and install it using the following command. The sysstat package contains iostat, mpstat, sar, and sa.
[Root @ testhost ~] # Rpm-ivh sysstat-7.0.2-3.el5.x86_64.rpm
Warning: sysstat-7.0.2-3.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 37017186
Preparing... ######################################## ### [100%]
1: sysstat ####################################### #### [100%]
[Root @ testhost ~] #

Run the command to test the installation.
[Root @ testhost ~] # Sar-u 10
Linux 2.6.18-194. el5 (testhost) 09/08/2011

At 09:05:14 CPU % user % nice % system % iowait % steal % idle
09:05:24 all 0.00 0.00 0.01 0.04 0.00 99.95
Average: all 0.00 0.00 0.01 0.04 0.00

[Root @ testhost ~] # Iostat
Linux 2.6.18-194. el5 (testhost) 09/08/2011

Avg-cpu: % user % nice % system % iowait % steal % idle
16.92 0.06 3.02 1.06 0.00 78.94

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
Sda 2.05 35.89 20.21 1338572 753712
Sda1 2.05 35.83 20.21 1336522
Sda2 0.00 0.04 0.00 0
Sdb 374.27 52740.63 7324.86 1967243416 273219624
Sdc 375.21 52741.08 7328.37 1967260216
Sdd 376.82 52740.83 7326.12 1967250984 273266616
Md0 1804.93 57.26 14434.28 2135842

[Root @ testhost ~] # Mpstat
Linux 2.6.18-194. el5 (testhost) 09/08/2011

At 09:12:40 CPU % user % nice % sys % iowait % irq % soft % steal % idle intr/s
09:12:40 all 16.68 0.05 2.69 1.04 0.08 0.22 0.00 79.25 2625.85

Brief description of Linux iostat command output

Linux iostat command

Linux iostat command details

Cacti adds iostat to monitor disk I/O

Mpstat