HP XP Performance Advisor Software - Manual (Page 55)

A XPWatch use case scenarios
Scenario 1: Port I/O spike
Business case
Periodic port I/O spikes are observed in XP Performance Advisor.
Objective
Locate the offending host group/application.
Resolution
XPWatch can be used to find the hot spot by collecting the performance data for very short intervals,
such as, 10 seconds.
Perform the following steps to find the hot spot:
1. Select the affected port (You can find the affected port using XP Performance Advisor).
2. Select all LDEVs attached to the port.
NOTE:
You can use one of the following selection schemes to select the LDEVs:
• Filter LDEVs by RAID Groups
• Filter RAID Groups by LDEVs
• Manually add RAID Groups and LDEVs without Filtering
3. On the output screen, monitor and collect performance data of all the ports.
Results
Using the results displayed by XPWatch, you can identify the application that is causing the
performance issue and can take the corrective action.
Scenario 2: Poor application response
Business case
The XP array is suspected to be the cause of an application’s poor performance.
XPWatch and XPSketch Reference Guide 55