HP 3PAR System Reporter Software - Manual (Page 326)

10.34 The Sample Data and Inventory Tables
3PAR System Reporter User’s Guide System Reporter 2.8
Although in principle it was not necessary to store the difference values (d_rcount for
example), since these can be derived from previous samples of the same object, in practice
having the difference values stored in the data tables greatly simplifies the queries and
improves the performance of the queries. As described in the comment for the begin column
in Table 10-19 , the differences are only valid when the objects have the same begin time.
d_rsize15 DOUBLE PRECISION NOT
NULL
Difference between rsize15 value from last
sample for same object.
wrsize0 DOUBLE PRECISION NOT
NULL
Number of writes in IO size bucket number
0 (512 bytes).
d_wsize0 DOUBLE PRECISION NOT
NULL
Difference between wsize0 value from last
sample for the same object.
... ... ...
wsize15 DOUBLE PRECISION NOT
NULL
Number of writes in IO size bucket number
16 (16MiBytest).
d_wsize15 DOUBLE PRECISION NOT
NULL
Difference between wsize15 value from
last sample for same object.
Table 10-19. Common Performance Columns
Column Type Comment