Interpreting ISC/IRC system and mode entry statistics

You can use the ISC/IRC system and mode entry statistics to detect some problems in a CICS® intersystem environment.

The following topics identify the questions you might have about system performance, and describe how answers to those questions can be derived from the statistics report. The topics also describe what actions, if any, you can take to resolve ISC/IRC performance problems.

Here are some questions you might have:
  • Are there enough sessions defined?
  • Is the balance of contention winners to contention losers correct?
  • Is there conflicting usage of APPC modegroups?
  • What can be done if there are unusually high numbers, compared with normal or expected numbers, in the statistics report?