AUTOGEN

 

   The AUTOGEN command procedure (SYS$UPDATE:AUTOGEN.COM) sets
   appropriate values for system parameters and sizes for system
   page, swap, and dump files. AUTOGEN runs automatically when you
   install or upgrade the operating system.

   In addition, you can use AUTOGEN to reset system parameter
   values, system file sizes, or both. The new values and file sizes
   take effect the next time the system is booted.

   VSI recommends that you run AUTOGEN on a weekly basis to
   adjust system parameters according to your system's work load.

   AUTOGEN executes in phases, with each phase performing a separate
   task. You control which tasks AUTOGEN performs by specifying a
   start phase and an end phase when you invoke AUTOGEN.

   You can add commands to the file SYS$SYSTEM:MODPARAMS.DAT to
   control the system parameter values and file sizes that AUTOGEN
   sets. AUTOGEN uses the information in this file to determine
   final values for system parameters or page, swap or dump file
   sizes.

   AUTOGEN can improve system performance by using dynamic
   information, called feedback, which is gathered from the running
   system.

                                  NOTE

      When making major configuration changes, do not use
      feedback. Specify nofeedback to assure the use of the
      initial AUTOGEN settings.

   You control how AUTOGEN uses feedback by specifying an execution
   mode when you invoke AUTOGEN. To direct AUTOGEN to use feedback
   to make its calculations, run AUTOGEN in feedback mode. After
   a period of time, you can execute AUTOGEN in feedback mode to
   further refine system parameter settings.
 

Additional information available:

When_to_Run_AUTOGEN             Feedback        Phases          Execution_Modes
Syntax          MODPARAMS.DAT