HP 3PAR OS 3.1.3 Command Line Interface Reference

For the I/O size histogram, show the columns from the first column (<fcol>) through the last
column (<lcol>). Available columns range from 0 through 15.
• The first column (<fcol>) must be a value greater than or equal to 0, but less than the value
of the last column (<lcol>). The default value of <fcol> is 3.
• The last column (<lcol>) must be less than or equal to 15. The default value of <lcol> is
15.
-pct
Shows the access count in each bucket as a percentage. If this option is not specified, the histogram
shows the access counts.
NOTE: For the following options, by default the histogram shows data from the start of the
command.
–prev|–begin
Histogram displays data either from a previous sample (–prev) or from when the system was last
started (–begin). If no option is specified, the histogram shows data from the beginning of the
command’s execution.
–rw
Specifies that the display includes separate read and write data. If not specified, the total is
displayed.
–d <secs>
Specifies the interval in seconds that statistics are sampled from using an integer from 1 through
2147483. If no count is specified, the command defaults to 2 seconds.
–iter <number>
Specifies that the histogram is to stop after the indicated number of iterations using an integer from
1 through 2147483647.
–sortcol <col> [,<dir>][:<col>[,<dir>]...]
Sorts command output based on column number <col>. Columns are numbered from left to right,
beginning with 0. You must specify a column number. In addition, you can specify the direction
of sorting <dir> as follows:
inc
Sort in increasing order (default).
dec
Sort in decreasing order.
–filt <fspec>
Specifies that histograms below the threshold specified by the <fspec> argument are not displayed.
The <fspec> argument is specified in the syntax of <op>,<val_ms>,<count>.
• <op>
The <op> argument can be specified as one of the following:
◦ r - Specifies read statistics.
◦ w - Specifies write statistics.
170 Hist Commands