Collecting execution counts information tells you
  what parts of your application are executed most when
  you place breakpoints at specific program locations.
  Execution counts information can be very useful for
  giving clues to the reason why a particular routine or
  algorithm is consuming a lot of time.

  To collect counting information on your application:

  o  Compile and link your application with the PCA
     Collector

  o  Run your application. This causes the PCA Collector
     to take control of your application. PCA diplays the
     Collector main window on your screen.

  o  From the File pull-down menu, create a data file
     into which the Collector places performance data.

  o  Choose the Execution Counts query category.

  o  Click on the query related to the exact counting
     information you want.

  o  Click on Collect in the Collector main window.

  For information on displaying the results of the
  execution counts query category, refer to:

  o  The hardcopy manual, Guide to DIGITAL Performance
     and Coverage Analyzer for OpenVMS Systems

  o  The online help for the PCA Analyzer.