AUTOGEN feedback minimizes the necessity to modify parameter
    values or system file sizes. Feedback allows AUTOGEN to
    automatically size the operating system based on your actual work
    load. Sizing is the process of matching the allocation of system
    resources (memory and disk space) with the workload requirements
    of your site.

    Feedback is information about how various resources are used
    by the system's work load. This information is continuously
    collected by the operating system executive. Because the
    system collects feedback when exception events occur, feedback
    collection does not affect system performance.

    You control how AUTOGEN uses feedback by specifying an execution
    mode when you invoke AUTOGEN. When run in feedback mode, AUTOGEN
    analyzes this information and adjusts any related parameter
    values.

    AUTOGEN collects feedback during the SAVPARAMS phase by executing
    the image SYS$SYSTEM:AGEN$FEEDBACK.EXE. AUTOGEN writes feedback
    information to the file SYS$SYSTEM:AGEN$FEEDBACK.DAT. This file
    is then read during the GETDATA phase.