HP XP P9000Watch and HP XP P9000Sketch Reference Guide for HP XP P9000 Performance Advisor v5.5 (T1789-96341, February 2013)

Table 22 RAID group performance metrics (continued)
DescriptionUnitPerformance
metrics
Front-end I/O Density [IOPS/GB]numberFeD
Back-end / Front-end I/O rationumberBe/Fe
Average RAID group I/O utilization%RG%
Back-end I/OnumberBe
CPU performance metrics
Table 23 describes the CPU performance metrics.
Table 23 CPU performance metrics
DescriptionUnitPerformance
metrics
Serial number of the arraynumberSer
CH slot number.
For P9000 disk arrays, the slot refers to the MP blade location.
stringSlot
Figure 24 shows the slots are shown as MA and MP
CH PCB type (Fibre/SCSI/FICON/DKA).
For P9000 disk arrays, the type is displayed as MPPK.
stringType
For an XP disk array, Min% indicates the minimum CPU utilization
on PCB [%].
For a P9000 disk array, Min% indicates the minimum processor
utilization on an MP blade. In Figure 24 the Min% indicates the
utilization of MP3.
%Min%
For an XP disk array, Max% indicates the maximum CPU utilization
on PCB [%].
For a P9000 disk array, Max% indicates the maximum processor
utilization on an MP blade. In Figure 24 the Max% indicates the
utilization of MP0.
%Max%
For an XP disk array, Avg% indicates the average CPU utilization
on PCB [%].
For a P9000 disk array, Avg% indicates the average utilization
of all MPs. In Figure 24 the Avg% indicates the utilization of MP0,
MP1, MP2, and MP3.
%Avg%
For an XP disk array, MP0 is the CHA PCB Busy Time for CPU 0
(if installed).
For a P9000 disk array, MP0 is the MP busy time for CPU 0 (if
installed).
numberMP0
For an XP disk array, MP1 is the CHA PCB Busy Time for CPU 1
(if installed).
For a P9000 disk array, MP1 is the MP busy time for CPU 1 (if
installed).
numberMP1
For an XP disk array, MP2 is the CHA PCB Busy Time for CPU 2
(if installed).
For a P9000 disk array, MP1 is the MP busy time for CPU 2 (if
installed).
numberMP2
For an XP disk array, MP3 is the CHA PCB Busy Time for CPU 3
(if installed).
For a P9000 disk array, MP3 is the MP busy time for CPU 3 (if
installed).
numberMP3
Understanding performance metrics 53