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

Source: Internet
Author: User

The Iostat command under Linux

#iostat-D-k-t 2

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-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

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