Sun Microsystems Blade 1500 - TABLE 3-6 Options for Iostat

3-16 Sun Blade 1500 Service, Diagnostics, and Troubleshooting Manual • December 2004
3.3.1.1 Options
TABLE 3-6 describes options for the iostat command and how those options can
help troubleshoot the Sun Blade 1500 workstation.
3.3.1.2 Examples
The following examples show output for the iostat command and its options.
TABLE 3-6 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
tty dad0 sd0 nfs1 nfs2 cpu
tin tout kps tps serv kps tps serv kps tps serv kps tps serv us sy wt id
0 5 128 15 6 0 0 0 0 0 0 50 3 9 2 8 4 86
# iostat -c
cpu
us sy wt id
2 7 4 87