HP StorageWorks P9000 Performance Advisor Software v5.2 User and Troubleshooting Guide (T1789-96315, June 2011)

Example (see Figure 25)
MP blade utilization by top
20 consumers
1.37%
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” on page 302.
Percentage of MP blade
utilization by a consumer
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.
Table 15 on page 302 lists the different processing types and their description.
Table 15 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
Indicates all the backend activities involved in processing target I/O requests.Backend
Indicates all the array system activities involved to service all the above-mentioned pro-
cessing type requests.
System
Select an MP blade from MP Blades in the component selection tree and choose the MP Blade
Util/Processing Type metric by clicking more in the Choose Metrics box. For more information, see
“MP Blades navigation path” on page 274. A stacked area graph is displayed in a separate Utilization
Metrics chart window and displays the MP blade utilization split up for the different processing types.
Using charts302