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2-38 SPARC Enterprise M8000/M9000 Servers Service Manual • October 2012
2.9.1.1 Options
TABLE 2-13 describes options for the iostat command and how those options can help
troubleshoot the server.
The following example shows output for one iostat command.
TABLE 2-13 Options for iostat
Option Description How It Can Help
No option Reports status of local I/O devices. A quick three-line output of device
status.
-c Reports the percentage of time the system has spent in user mode,
in system mode, waiting for I/O, and idling.
Quick report of CPU status.
-e Displays device error summary statistics. The total errors, hard
errors, soft errors, and transport errors are displayed.
Provides a short table with
accumulated errors. Identifies suspect
I/O devices.
-E Displays all device error statistics. Provides information about devices:
manufacturer, model number, serial
number, size, and errors.
-n Displays names in descriptive format. Descriptive format helps identify
devices.
-x For each drive, reports extended drive statistics. The output is in
tabular form.
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.
# iostat -En
c0t0d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0
Model: ST3120026A Revision: 8.01 Serial No: 3JT4H4C2
Size: 120.03GB <120031641600 bytes>
Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0
Illegal Request: 0
c0t2d0 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0
Vendor: LITE-ON Product: COMBO SOHC-4832K Revision: O3K1 Serial
No:
Size: 0.00GB <0 bytes>
Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0
Illegal Request: 0 Predictive Failure Analysis: 0