Disk IO

godoc

import "barista.run/modules/diskio"

Display disk I/O rates for a device: diskio.New("sda1").

The disk names used are the ones shown in the third column of /proc/diskstats.

Configuration

• Output(func(IO) bar.Output): Sets the output format.

Because the diskio module performs a single read to update all instances, the refresh interval can only be set for the package as a whole.

• diskio.RefreshInterval(time.Duration): Sets the interval to wait between updating disk stats. Defaults to 3 seconds. On each refresh of disk information, all diskio modules will be updated.

Example

sda1: 5.0 KiB/s

Show the total disk activity for sda1:

diskio.New("sda1").Output(func(i diskio.IO) bar.Output) {
	return outputs.Textf("sda1: %s", outputs.IByterate(i.Total()))
})

Data: type IO struct

Fields

• Input unit.Datarate: Rate of data read from the disk.
• Output unit.Datarate: Rate of data written to the disk.

Methods

• Total() unit.Datarate: Total activity of the disk (reads + writes).

Documentation for unit.Datarate