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9.5.1
iostat Command
The iostat command iteratively reports terminal, drive, and tape I/O activity, as
well as CPU utilization.
9.5.1.1
Options
TABLE 9-2
help troubleshoot the Sun Ultra 45 or Ultra 25 workstation.
Options for
TABLE 9-2
Option
Description
No option
Reports status of local I/O devices.
Reports the percentage of time the system has
-c
spent in user mode, in system mode, waiting for
I/O, and idling.
Displays device error summary statistics. The
-e
total errors, hard errors, soft errors, and transport
errors are displayed.
Displays all device error statistics.
-E
Displays names in descriptive format.
-n
For each drive, reports extended drive statistics.
-x
The output is in tabular form.
The following example shows output for one iostat command.
describes options for the iostat command and how those options can
iostat
Chapter 9 Solaris 10 Predictive Self-Healing and Solaris Diagnostics
How It Can Help
A quick three-line output of device
status.
Quick report of CPU status.
Provides a short table with accumulated
errors. Identifies suspect I/O devices.
Provides information about devices:
manufacturer, model number, serial
number, size, and errors.
Descriptive format helps identify
devices.
Similar to the
-e
option, but provides
rate information. This helps identify
poor performance of internal devices
and other I/O devices across the
network.
9-7
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