3PAR InForm® OS 2.3.1 CLI Reference (320-200166 Rev B, March 2010)

15.31
InForm OS Version 2.3.1 Command Line Interface Reference
EXAMPLES
The following example displays two iterations of a histogram of service times for all VVs:
NOTES
■ Each service time histogram column shows the number of accesses with service times
between the point in time shown in the column's heading to the point in time shown in the
heading of the column to its right (or infinity for the last column).
■ Each I/O size histogram column shows the number of accesses with I/O size between the
size shown in the column's heading to the size shown in the heading of the column to its
right (or infinity for the last column).
■ If a <VV_name> or <pattern> are specified, then VVs with names that match any of the
patterns are listed, otherwise all VVs are listed. These patterns are glob-style patterns (see
help on
sub,globpat).
■ Virtual volumes may be accessed externally by hosts and internally by the prefetcher.
Virtual volume data measured by this command include accesses by the prefetcher.
■ In addition to external accesses by hosts, VVs can be read internally by the system read-
ahead prefetcher. The
histvv data includes read-ahead accesses from the prefetcher that
can cause the read data to appear more than seen by the hosts. Use the
histvlun -vvsum command to see data for only accesses from the host.
%cli histvv –iter 2
12:53:03 10/20/04 ------------Time (millisec)------------
VVname 0.26 0.53 1.05 2.1 4.2 8.4 17 34 67 135
admin 0 0 0 0 0 0 0 0 0 0
tpvv 29 0 0 0 0 0 0 0 0 0
---------------------------------------------------------
total 29 0 0 0 0 0 0 0 0 0
12:53:05 10/20/04 ------------Time (millisec)------------
VVname 0.26 0.53 1.05 2.1 4.2 8.4 17 34 67 135
admin 0 0 0 0 0 0 0 0 0 0
tpvv 105 0 0 0 0 0 0 0 0 0
---------------------------------------------------------
total 105 0 0 0 0 0 0 0 0 0