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DEFRAGMENT, SET

 *Conan The Librarian

    The SET subcommand defines or changes the value of the
    defragmentation process limits.

    Format

      DEFRAGMENT SET  { (parameter=value[,...]) } [ /QUALIFIERS ]

  1 - Parameters

 keywords:

    o  CPU_LIMIT specifies the percent of CPU usage for any one
       defragmentation process. The CPU percent is the percent of
       a single CPU.

    o  IO_LIMIT specifies the maximum direct I/O rate (per second) of
       any one defragmentation process.

    o  PROCESS_LIMIT specifies the maximum number of defragmentation
       processes per node.

  2 - Restrictions

    o  None.

  3 - Qualifiers

 3.1 - /NODE

       /NODE=(node-name[,...])
       /NONODE (default)

          The /NODE qualifier limits the scope of the SET
          subcommand. By default, a given parameter is set
          identically on all nodes in the scheduling database.
          To limit parameters to fewer nodes, specify the node
          names with the /NODE qualifier.

  4 - Examples

      The following examples show how to set limits using the SET
      subcommand and its qualifiers:

    1.$ DEFRAGMENT SET PROCESS_LIMIT=3, IO_LIMIT=14/NODE=NODE_1

      In this example, the maximum number of defragmentation
      processes that can occur on NODE_1 is 3. Further, a restriction
      of 14 direct I/Os per second is placed on each of these 3
      defragmentation processes.

    2.$ DEFRAGMENT SET CPU_LIMIT=50

      In this example, the maximum CPU resources allocated to any
      defragmentation process is set to 50 percent on all nodes in
      the system. If a defragmentation process exceeds this limit,
      its priority is decremented each minute (approximately) until
      it reaches the SYSGEN parameter, DEFPRI, minus 1.
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