Coordinating performance information in an MSC network

The IMS system log for each system participating in Multiple Systems Coupling (MSC) contains only the record of events that take place in that system. The logging of traffic received on links is included.

You can augment the system log documentation that records the checkpoint intervals with the system identifications of all coupled systems. This helps you interpret reports, because you know of transactions that might be present in message queues but are not processed, and you can expect additional transaction loads from remote sources. In your analysis procedures, include ways of isolating the processing triggered by transactions originating from another system.

To satisfy the need for monitoring with typical activity that includes cross-system processing, coordinate your scheduling of the IMS Monitor and other traces between master terminal operators. The span of the monitoring does not have to be exactly the same, but if it is widely different, the averaging of report summaries can make it harder to interpret the effect of the processing triggered by cross-system messages.

Related reading: For more information on interpreting MSC reports, see IMS Monitor reports for MSC.