Fabric Manager Users Guide, Version 6.1, Revision A - QLogic

2–Advanced Fabric Manager Capabilities
Performance Manager
Fabric Viewer
Figure 2-9. Management Paths
The management of the port counters is not centralized without PM and various
management entities in the fabric are able to clear (reset to zero) these counters,
without regard for coordination among monitoring tools. The PM can perform
regular sweeps of the fabric to gather and summarize both error and performance
statistics. This capability allows for centralized control of PMAs and can avoid the
potential confusion from many tools (iba_report, iba_mon, and so on) directly
clearing PMA counters.
The Performance Administration (PA) entity allows a centralized control point for
querying the performance data in the fabric. The relationship of the PM and PA
mirrors that of the Subnet Manager and Subnet Administration (SM/SA) entities;
the PM is the “workhorse”, performing communication with the Performance
Management Agents (PMAs) in the fabric, and, with the use of a calculation
“engine”, stores the information in the PA database. The PA is then available as a
service, similar to the SA, to provide performance information to client applications
in the fabric. Refer to Figure 2-10 for an example of the management paths prior
to version 6.0.
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