HP 3PAR StoreServ 7400 2-node HP 3PAR Command Line Interface Administrator& - Page 124

Viewing Statistical Histogram Reports for Performance, Viewing Histograms

Page 124 highlights

Viewing Statistical Histogram Reports for Performance Performance histogram statistical reports are available for the following. You can specify whether to display I/O time and/or I/O size, the number of histogram columns, and whether to separate read and write data or display the total I/O for: • LDs • Physical disks • Ports • Virtual volume LUN exports Viewing Histograms This section provides instructions on using common CLI commands to access histogram data on system resources. The commands described here are a subset of the histogram commands available. Histogram data can be viewed for the following resources: • chunklets • LDs • physical disks • ports • VLUNs • virtual volumes For a complete list of histogram commands, see the HP 3PAR Command Line Interface Reference. Viewing Histograms for Chunklets NOTE: The setstatch command must be issued to enable statistics collection on chunklets before chunklet histogram data can be viewed. 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 LDs. Additional filters are provided to customize the way the histogram data is displayed. For complete details about histch command options and for sample command data output, see the HP 3PAR Command Line Reference. Viewing Histograms for Logical Disks To view histogram data for LDs, issue the histld command. The histld command provides filters to refine the data output to display only data from LDs mapped to specific virtual volumes. Additional filters are provided to customize the way the histogram data is displayed. For complete details about histld command options and for sample command data output, see the HP 3PAR Command Line Reference. Viewing Histograms for Physical Disks To view histogram data for physical disks, issue the histpd command. Histogram data output can be further refined to display physical disk data from: • a physical disk, specified by either its ID or WWN. • specific nodes. • specific PCI slots. • specific ports. 124 Viewing Statistics and Histograms

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Viewing Statistical Histogram Reports for Performance
Performance histogram statistical reports are available for the following. You can specify whether
to display I/O time and/or I/O size, the number of histogram columns, and whether to separate
read and write data or display the total I/O for:
LDs
Physical disks
Ports
Virtual volume LUN exports
Viewing Histograms
This section provides instructions on using common CLI commands to access histogram data on
system resources. The commands described here are a subset of the histogram commands available.
Histogram data can be viewed for the following resources:
chunklets
LDs
physical disks
ports
VLUNs
virtual volumes
For a complete list of histogram commands, see the
HP 3PAR Command Line Interface Reference
.
Viewing Histograms for Chunklets
NOTE:
The
setstatch
command must be issued to enable statistics collection on chunklets
before chunklet histogram data can be viewed.
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 LDs. Additional filters are provided to customize the way the histogram data is displayed. For
complete details about
histch
command options and for sample command data output, see the
HP 3PAR Command Line Reference
.
Viewing Histograms for Logical Disks
To view histogram data for LDs, issue the
histld
command.
The
histld
command provides filters to refine the data output to display only data from LDs
mapped to specific virtual volumes. Additional filters are provided to customize the way the
histogram data is displayed. For complete details about
histld
command options and for sample
command data output, see the
HP 3PAR Command Line Reference
.
Viewing Histograms for Physical Disks
To view histogram data for physical disks, issue the
histpd
command.
Histogram data output can be further refined to display physical disk data from:
a physical disk, specified by either its ID or WWN.
specific nodes.
specific PCI slots.
specific ports.
124
Viewing Statistics and Histograms