Flushing the Logstream Buffer

SMF data is maintained in a buffer area before it's written to the logstream. SMF will be triggered to flush the buffer and "harden" the data to the logstream if any of the following scenarios occur:

• At least a single buffer block is full.
• The time that is coded on the MAXDORM parameter expires.
• In response to a SWITCH SMF, command (see z/OS MVS System Commands for more information on the SWITCH command).
• During halt processing (following a Z EOD).