WebSphere Application Server V7.0: Concepts ... - IBM Redbooks

7.9.2 Tivoli performance viewer
Tivoli Performance Viewer (TPV) is included with WebSphere Application Server
V7.0 and is used to record and display performance data. Since WebSphere
Application Server V6.0, TPV is integrated into the Integrated Solutions Console.
Using Tivoli Performance Viewer, you can perform the following tasks:
► Display PMI data collected from local and remote application servers:
– Summary reports show key areas of contention.
– Graphical/tabular views of raw PMI data.
– Optionally save collected PMI data to logs.
► Provide configuration advice through performance advisor section
Tuning advice formulated from gathered PMI and configuration data.
► Log performance data
Using TPV you can log real-time performance data and review the data at a
later time.
► View server performance logs
You can record and view data that has been logged by TPV in the Integrated
Solutions Console.
You can use TPV to create summary reports. These reports let you monitor the
server’s real-time performance and health. TPV enables you to work with the
performance modules. With these modules, you can drill down on specific areas
of interest, even old logs. Use the log analysis tools to detect trends over time.
TVP can also save performance data for later analysis or problem determination.
As the TPV runs inside the Integrated Solutions Console, the performance
impact depends on which edition of WebSphere Application Server you run.
When running the single server edition, the TPV runs in the same JVM as your
application. In Network Deployment, the TPV runs in the JVM of the deployment
manager. Certain functions (like the advisor), however, require resources in the
node agents or in the application servers.
7.9.3 WebSphere performance advisors
Gathering information made available through the PMI, the WebSphere
performance advisors have the ability to make suggestions about the
environment. The advisors are able to determine the current configuration for an
application server, and trending the PMI data over time, make informed decisions
about potential environmental changes that can enhance the performance of the
system. Advice is hard coded into the system and is based on IBM best practices
Chapter 7. Performance, scalability, and high availability 271