Dot Hill Systems AssuredSAN 6004, Cli Reference Manual, Page: 166 / 363

166 Alphabetical list of commands
show host-port-statistics
Description Shows live performance statistics for each controller host port. For each host port these statistics
quantify I/O operations through the port between a host and a volume. For example, each time a
host writes to a volume’s cache, the host port’s statistics are adjusted. For host-port performance
statistics, the system samples live data every 15 seconds.
Statistics shown only in XML API output are described in
"XML API basetype properties" (page 221) .
Min. role
monitor
Syntax
show host-port-statistics
[ports ports ]
Parameters
ports ports
Optional. Specifies a comma-separated list of port IDs for which to show information. For port
syntax, see "Command syntax" (page 18) . If this parameter is omitted, information is shown for all
host ports.
Output
Durable ID
The host port ID in the form
hostport_ controller-ID-and-port-number
.
Bytes per second
The data transfer rate calculated over the interval since these statistics were last requested or reset.
This value will be zero if it has not been requested or reset since a controller restart.
IOPS
The input/output operations per second, calculated over the interval since these statistics were last
requested or reset. This value will be zero if it has not been requested or reset since a controller
restart.
Reads
The number of read operations since these statistics were last reset or since the controller was
restarted.
Writes
The number of write operations since these statistics were last reset or since the controller was
restarted.
Data Read
The amount of data read since these statistics were last reset or since the controller was restarted.
Data Written
The amount of data written since these statistics were last reset or since the controller was restarted.
Queue Depth
The number of pending I/O operations being serviced.
I/O Resp Time
The average response time in microseconds for read and write operations, calculated over the
interval since these statistics were last requested or reset.
Read Resp Time
The average response time in microseconds for all read operations, calculated over the interval since
these statistics were last requested or reset.
Write Resp Time
The average response time in microseconds for all write operations, calculated over the interval since
these statistics were last requested or reset.
Reset Time
The date and time, in the format
year-month-day hour : minutes : seconds
, when these
statistics were last reset, either by a user or by a controller restart.
Example Show live performance statistics for all host ports.
# show host-port-statistics