Table 14 contains a summary of potential performance bottlenecks, the symptoms you get if they are restricting the performance of your system, and the specific causes of the delays at each point.
Bottleneck | Symptoms | Possible causes |
---|---|---|
Initial attach to transaction manager | CEMT INQ TASK does not know task.
Tracing shows long wait for attach to transaction manager. |
|
Initial attach to dispatcher | CEMT INQ TASK shows wait on MXT or transaction class.
Tracing shows long wait for attach to dispatcher. |
MXT or transaction class limits set too low |
First dispatch | Performance class monitoring shows long wait for first
dispatch.
Storage statistics show CICS has gone SOS. |
|
SUSPEND / RESUME cycle | Tasks take a long time to complete. |
|