IMS performance management
is made up of a set of activities, designed to achieve a set of goals.
Procedure
- Establish performance objectives for each subsystem
(IMS, TSO, Batch) and their relative
priorities.
- Initialize MVS and
subsystem parameters with a view to meeting the defined performance
objectives.
- Monitor the operation of the total system to
confirm that performance objectives are being met.
The
three broad levels of monitoring are:
- Dynamic monitoring to discover if performance deviates from established
objectives
- Daily monitoring of key performance objectives in order to observe
trends and early indicators of possible performance problems
- Detailed monitoring performed periodically to review performance
and decide on tuning requirements
For more information about these levels of monitoring,
see Collecting and interpreting IMS monitoring data.
- Identify a problem that has been monitored
and correct it with minimum disruption of normal service to users.
- Perform capacity planning or trend analysis
to ensure that projected loads will not cause performance problems
in the foreseeable future.
Establishing performance objectives and monitoring operations
are addressed in Monitoring the system. Performing
capacity planning or a trend analysis is described in Performing capacity planning and
in Using the IMS Performance
Analyzer for z/OS®
in IMS Version 15.5 Operations and Automation.