>Usage
Displays kernel In and Out statistics about the terminal, device and CPU operations by observing the time the devices are active in relation to their average transfer rates.
>Synopsis
>Options
-c
The command -c <count> Repeats the display a chosen number of times.
Example 1:
-zsh
> iostat -c 5
disk0 cpu load average
KB/t tps MB/s us sy id 1m 5m 15m
22.42 24 0.53 4 3 93 4.72 3.52 2.84
16.25 32 0.51 2 2 97 4.72 3.52 2.84
62.44 36 2.19 3 2 95 4.66 3.53 2.85
0.00 0 0.00 2 1 97 4.66 3.53 2.85
0.00 0 0.00 1 1 97 4.66 3.53 2.85
-d
Only displays device statistics.
Example 2:
-zsh
> iostat -d
disk0
KB/t tps MB/s
22.42 24 0.53
-I
-I <time> displays the statistics after every time interval passed, a given time period instead of average during the time period.
Example 3:
-zsh
> iostat -I [10]
disk0 cpu load average
KB/t xfrs MB us sy id 1m 5m 15m
22.42 6331866 138626.55 4 3 93 1.93 2.67 2.64
-n
The command -n <devs>Displays only up to a chosen number of devices.
Example 4:
-zsh
> iostat -n [1]
10.50 3 0.03
-w
The -w <wait> pauses for a chosen number of seconds between each display, infinite by default.
Example 5:
-zsh
> iostat -w [2]
10.50 3 0.03 20.00 10 0.20