Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

To display the accumulated statistics at regular intervals, use the following
command:
# vxdmpadm iostat show {all | dmpnodename=dmp-node | \
enclosure=enclr-name | pathname=path-name | ctlr=ctlr-name} \
[interval=seconds [count=N]]
This command displays I/O statistics for all paths (all), or for a specified DMP
node, enclosure, path or controller. The statistics displayed are the CPU usage
and amount of memory per CPU used to accumulate statistics, the number of read
and write operations, the number of kilobytes read and written, and the average
time in milliseconds per kilobyte that is read or written.
The interval and count attributes may be used to specify the interval in seconds
between displaying the I/O statistics, and the number of lines to be displayed. The
actual interval may be smaller than the value specified if insufficient memory is
available to record the statistics.
To disable the gathering of statistics, enter this command:
# vxdmpadm iostat stop
Examples of using the vxdmpadm iostat command
The following is an example session using the vxdmpadm iostat command. The
first command enables the gathering of I/O statistics:
# vxdmpadm iostat start
The next command displays the current statistics including the accumulated total
numbers of read and write operations and kilobytes read and written, on all paths:
# vxdmpadm iostat show all
cpu usage = 7952us per cpu memory = 8192b
OPERATIONS KBYTES AVG TIME(ms)
PATHNAME READS WRITES READS WRITES READS WRITES
c0t0d0 1088 0 557056 0 0.00 0.00
c2t118d0 87 0 44544 0 0.00 0.00
c3t118d0 0 0 0 0 0.00 0.00
c2t122d0 87 0 44544 0 0.00 0.00
c3t122d0 0 0 0 0 0.00 0.00
c2t115d0 87 0 44544 0 0.00 0.00
c3t115d0 0 0 0 0 0.00 0.00
c2t103d0 87 0 44544 0 0.00 0.00
c3t103d0 0 0 0 0 0.00 0.00
c2t102d0 87 0 44544 0 0.00 0.00
167Administering Dynamic Multipathing
Administering DMP using vxdmpadm