When CMF data is passed to SMF

The different classes of CICSĀ® monitoring records are not written to SMF in the same way:
  • Performance data records are written to a performance record buffer, which is defined and controlled by CICS, as the records are produced. The performance records are passed to SMF for processing when the buffer is full, when the performance class of monitoring is switched off, and when CICS itself quiesces. When monitoring itself is deactivated or when there is an immediate shutdown of CICS, the performance records are not written to SMF and the data is lost.
  • Exception data records are passed directly to SMF when the exception condition completes. Each exception record describes one exception condition. You can link performance records with their associated exception records by matching the transaction identification number (TASKNO field) or network unit-of-work ID (NETNAME and NETUOWSX fields) in each type of record.
  • Transaction resource data records are written to a transaction resource record buffer, which is defined and controlled by CICS, as the records are produced. The transaction resource records are passed to SMF for processing when the buffer is full; when the transaction resource class of monitoring is switched off; and when CICS itself quiesces. When monitoring itself is deactivated or when there is an immediate shutdown of CICS, the transaction resource records are not written to SMF and the data is lost.