The Performance and Coverage Analyzer for OpenVMS (PCA) is a
    software development tool that helps you analyze the run-time
    behavior of application programs. PCA can pinpoint execution
    bottlenecks and other performance problems in user programs.
    Using this information, you can modify your programs to run
    faster. This tool also measures which parts of your program are
    or are not executed by a given set of test data so that you can
    devise tests that exercise all parts of your program.

    PCA has two operational components: the Collector and the
    Analyzer. The Collector gathers performance or coverage data
    on a running user program and writes that data to a performance
    data file. Later, the Analyzer processes the collected data to
    produce performance or coverage histograms and tables.

    The DCL command 'PCA' invokes the Analyzer. The parameter to the
    PCA command is the name of the performance data file to analyze.

    Format

      $ PCA  [file-spec]