HP 3PAR Guide de l'utilisateur Page 182

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SPECIFIERS
None.
RESTRICTIONS
None.
EXAMPLES
The following example displays one iteration of a histogram of service times for system chunklets:
cli% histch iter 1
12:42:57 10/20/04 ------------Time (millisec)------------
Ldid Ldname LdCh Pdid PdCh 0.26 0.53 1.05 2.1 4.2 8.4 17 34 67 135
2 tp0sa0.0 1 21 0 0 0 0 0 0 0 0 0 0 0
2 tp0sa0.0 0 45 0 0 0 0 0 0 0 0 0 0 0
1 tp0sa0.1 1 20 0 0 0 0 0 0 1 0 0 0 0
1 tp0sa0.1 0 42 0 0 0 0 0 0 1 0 0 0 0
0 admin.usr.0 1 22 3 0 0 0 1 0 3 2 0 0 0
0 admin.usr.0 0 44 3 0 0 0 0 1 3 2 0 0 0
-----------------------------------------------------------------------
total 0 0 0 1 1 8 4 0 0 0
For the previous example, before the histch command was issued, the setstatch start
command was issued for chunklets 0 and 1 on logical disks admin.usr.0, tp0sa0.1,and
tp0sa0.0.
NOTES
The setstatch command must be issued to enable statistics collection on chunklets before
issuing the histch command. See setstatch” (page 331) for additional information.
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). Unless all columns are shown, the first
column shows the number of accesses with service times less than the heading of the second
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).
182 Hist Commands
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