
15.2
Command Line Interface Reference InForm OS Version 2.2.4
COMMAND
histch
DESCRIPTION
The histch command displays a histogram of service times in a timed loop for individual
chunklets.
SYNTAX
histch [options <arg>]
AUTHORITY
Super, Service, Edit, Browse
OPTIONS
–ld <LD_name>
Specifies the logical disk, identified by name, from which chunklet statistics are sampled.
–ch <chunklet_num>
Specifies that statistics are limited to only the specified chunklet, identified by number.
–metric both|time|size
Selects which metric to display. Metrics can be one of the following:
◆ both - (Default) Displays both I/O time and I/O size histograms.
◆ time - Displays only the I/O time histogram.
◆ size - Displays only the I/O size histogram.
–timecols <fcol> <lcol>
For the I/O time histogram, show the columns from the first column <fcol> through last
column
<lcol>. The available columns range from 0 through 31.
◆ The first column (<fcol>) must be a value greater than or equal to 0, but less than the
value of the last column (
<lcol>) (default value of 6).
◆ The last column (<lcol>) must be less than or equal to 31 (default value of 15).
◆ The first column includes all data accumulated for columns less than the first column
and the last column includes accumulated data for all columns greater than the last
column.
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