Querying disk performance (IOSTAT)

The Iostat in a Linux system is an abbreviation for I/O statistics (input/output statistics), and the Iostat tool will

Monitor the disk operation activity. It is characterized by the reporting of disk activity statistics, as well as the reporting of CPU usage. With

Vmstat, Iostat also has a weakness, that is, it cannot analyze a process in depth, only the overall situation of the system

for analysis. Iostat belongs to the Sysstat package. Can be installed directly with Yum install Sysstat.

1. Command format:

iostat[parameters [TIME] [number]

2. Command function:

With Iostat, it is convenient to view the activity of CPU, network card, TTY device, disk, CD-ROM and so on.

Download information.

3. Command parameters:

-C Display of CPU usage

-D Display disk usage

-K displays in kilobytes

-m displays in units of M.

-N Display of disk array (LVM) information

-N Display of NFS usage

-p[disk] Displays disk and partition conditions

-t display terminal and CPU information

-X to display detailed information

-V Display version information

Querying disk performance (IOSTAT)