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 NSTRPUSH(5)                                                     NSTRPUSH(5)
                          Tunable Kernel Parameters



 NAME    [Toc]    [Back]
      NSTRPUSH - maximum number of STREAMS modules in a single stream

 VALUES    [Toc]    [Back]
    Failsafe
      16

    Default    [Toc]    [Back]
      16

    Allowed values    [Toc]    [Back]
      0 - 2147483647

    Recommended values    [Toc]    [Back]
      16

 DESCRIPTION    [Toc]    [Back]
      This tunable defines the maximum number of STREAMS modules that can be
      pushed onto a stream.  This provides some protection against run-away
      processes that might automatically select modules to push onto a
      stream.  It is not intended as a defense against malicious use of
      STREAMS modules by system users.

      Most systems do not require more than about three or four modules in a
      stream.  However, there may be some unusual cases where more modules
      are needed.  The default value for this tunable allows as many as 16
      modules in a stream, which should be sufficient for even the most
      demanding installations and applications.

    Who Is Expected to Change This Tunable?
      Any customer.

    Restrictions on Changing    [Toc]    [Back]
      Changes to this tunable take effect at next reboot.

    When Should the Value of This Tunable Be Raised?
      When the customer needs to push more STREAMS modules in a single
      stream.

    What Are the Side Effects of Raising the Value of This Tunable?
      Might allow run-away applications to unduly consume system resources.

    When Should the Value of This Tunable Be Lowered?
      There is no need to lower the tunable value from the default value.

    What Are the Side Effects of Lowering the Value of This Tunable?
      Too low of a value might cause network commands to fail.

    What Other Tunable Should Be Changed at the Same Time as This One?
      None.




 Hewlett-Packard Company            - 1 -      HP-UX 11i Version 2: Sep 2004






 NSTRPUSH(5)                                                     NSTRPUSH(5)
                          Tunable Kernel Parameters



 WARNINGS    [Toc]    [Back]
      All HP-UX kernel tunable parameters are release specific.  This
      parameter may be removed or have its meaning changed in future
      releases of HP-UX.

      Installation of optional kernel software, from HP or other vendors,
      may cause changes to tunable parameter values.  After installation,
      some tunable parameters may no longer be at the default or recommended
      values.  For information about the effects of installation on tunable
      values, consult the documentation for the kernel software being
      installed. For information about optional kernel software that was
      factory installed on your system, see HP-UX Release Notes at
      http://docs.hp.com.

 AUTHOR    [Toc]    [Back]
      NSTRPUSH was developed by HP.


 Hewlett-Packard Company            - 2 -      HP-UX 11i Version 2: Sep 2004
[ Back ]
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