3PAR InForm® OS 2.2.4 CLI Administrator's Manual (320-200113 Rev A, March 2009)

12.5
Viewing Histograms
InForm OS Version 2.2.4 3PAR InForm OS CLI Administrator’s Manual
12.3 Viewing Histograms
This section provides instructions on using commonly used CLI commands to access histogram
data on system resources. The commands described here are a subset of the histogram
commands available. For a complete list of histogram commands, see the InForm OS Command
Line Interface Reference.
Histogram data can be viewed for the following resources:
 Chunklets
 Logical disks
 Physical disks
 Ports
 VLUNs
 Virtual volumes
12.3.1 Viewing Histograms for Chunklets
 To view histogram data for chunklets, issue the histch command.
Several filters are provided to refine the data output to display only data from specific
chunklets and logical disks,. Additional filters are provided to customize the way the
histogram data is displayed. Refer to the InForm OS Command Line Reference for complete
details about
histch command options and for sample command data output.
12.3.2 Viewing Histograms for Logical Disks
 To view histogram data for logical disks, issue the histld command.
The
histld command provides filters to refine the data output to display only data from
logical disks mapped to specific virtual volumes. Additional filters are provided to
customize the way the histogram data is displayed. Refer to the InForm OS Command Line
NOTE: The setstatch command must be issued to enable statistics collection on
chunklets before chunklet histogram data can be viewed.