Historical Performance Data

This section provides an overview of historical performance data and lists the pages used to analyze historical performance data.

The system stores historical data from the moment a PMU finishes processing or an event occurs. When the archive program runs (PSPM_ARCHIVE), it either deletes the historical data or moves it to the archive tables.

Analyzing historical data can help you:

  • Identify trends.

    By comparing historical data, you can spot upward and downward performance trends.

  • Investigate past user complaints.

    For example, a user may complain that performance was slow during the previous week. You search historical performance data to find the PMUs that were generated by the user at a specific time a week ago.