HP XP P9000 Performance Advisor Software v5.5 User Guide (T1789-96337, Februrary 2013)

Example (see Figure 27 (page 272))MP blade utilization by top 20 consumers
whether the frontend or the backend requests have been high.
Further to the above-mentioned example:
• If the average utilization shown for the Frontend processing
type is 30% and 25% is contributed by the LDEV 0:09
• If the average utilization shown for the Backend processing
type is 25% and 15% is contributed by the LDEV 0:09
This data indicates that the LDEV 0:09 has been addressing
high frontend requests when compared to the backend activities.
NOTE: The average utilization of an MP Blade is always on
a scale of 1 - 100%.
1.37%Percentage of MP blade utilization by a consumer
Indicates that 1.37% is the average MP blade utilization by the
consumer 0:18 that belongs to the LDEV category and associated
with the Backend processing type.
It also indicates that out of the average MP blade utilization
displayed for the Backend processing type, 1.37% utilization
is due to the consumer 0:18. For more information on processing
types, see “Viewing MP blade utilization by processing types”
(page 273).
IMPORTANT: A consumer's percentage of MP blade utilization might or might not be constant
for the entire duration that you select. For example, it can be the utilization at a particular time
stamp that is the maximum compared to the utilization by other components during the selected
duration.
Viewing MP blade utilization by processing types
IMPORTANT: This section is applicable only for the P9000 disk arrays.
You can view the average MP blade utilization split up for the different processing types. For
example, if the average MP blade utilization by a Frontend processing type is significantly higher
than the other processing types, it indicates that more CPU cycles are utilized to process requests
from the Frontend consumers. Similarly, if the average utilization by a Backend processing type is
high, it indicates that more CPU cycles are utilized to process backend transfers for the Backend
consumers.
“Processing types” (page 273) lists the different processing types and their description.
Table 22 Processing types
DescriptionProcessing types
Indicates all the frontend activities involved in processing the
I/O requests.
Open-target
Indicates all the processing involved in the continuous access
replication activities.
Open-initiator
Indicates all the processing involved in accessing external
storage.
Open-external initiator
Indicates all the frontend activities involved in processing
mainframe I/O requests.
Open-mainframe target
Indicates all the frontend activities involved in processing
mainframe I/O requests.
Open-mainframe ext initiator
Plotting charts 273