Linux Operations Phase III (8) disk IO performance monitoring Iostat

The Iostat command under Linux

#iostat-D-k-t 2

650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M00/79/A9/wKiom1aXZoLx6kxcAAAngDb8OQQ543.png "title=" D4R) 1q5fj_y{12bo9s5_gvo.png "alt=" Wkiom1axzolx6kxcaaangdb8oqq543.png "/>

-D: Display devices in the system

-K: Indicates the display in kilobytes per second

-T: Print out time information

2: Count once every 2 seconds

The time information is printed each time the output is displayed, followed by a list of disk IO conditions.

Device: Displays the disk name
TPS: Indicates the number of transfers per second that are output to the physical disk. A single transfer is an I/O request to a physical disk. Multiple logical requests can be and are a single I/O request to disk. The transport has a medium size.
KB_READ/S: The amount of data read from disk per second, in kilobytes.
KB_WRTN/S: The amount of data written to disk per second, in kilobytes.
Kb_read: Total number of kilobytes read.
KB_WRTN: Total number of kilobytes written

Linux Operations Phase III (8) disk IO performance monitoring Iostat