When you log statistics to SMF, each statistics record contains a standard SMF header, including the subtype identifier.
When you log statistics to a file, each statistics record includes an SMF header for consistency. However, the detail in this record is limited.
Both formats include a PowerExchange header with triplets that define occurrences, lengths, and offsets for all record sections.
The following table shows the type of content that PowerExchange logs for each record subtype:
Function/Access Method Section