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nstrpush(5) [hpux man page]

NSTRPUSH(5)							File Formats Manual						       NSTRPUSH(5)

NAME

       NSTRPUSH - maximum number of STREAMS modules in a single stream

VALUES

   Failsafe
   Default
   Allowed values
   Recommended values
DESCRIPTION

       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
       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.

WARNINGS

       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 tun-
       able values, consult the documentation for the kernel software being installed.	For information about optional kernel  software  that  was
       factory installed on your system, see at

AUTHOR

       was developed by HP.

							     Tunable Kernel Parameters						       NSTRPUSH(5)

Check Out this Related Man Page

rtsched_numpri(5)						File Formats Manual						 rtsched_numpri(5)

NAME

       rtsched_numpri - number of priority values to support for POSIX.1b realtime applications

VALUES

   Failsafe
   Default
   Allowed Values
       is allowed.

   Recommended Value
DESCRIPTION

       The  tunable defines how many priority values to support for POSIX 1.b realtime applications.  A larger value provides additional flexibil-
       ity to applications in managing relative priorities of all threads with respect to each other and with respect to other	applications  run-
       ning  in  the system.  However, a larger value adds processing overhead in the operating system in terms of managing larger run queues with
       the possibility of increased search times.

   Who Is Expected to Change This Tunable?
       Anyone.

   Restrictions on Changing
       Changes to this tunable take effect at next reboot.

   When Should the Value of This Tunable Be Raised?
       When the system is primarily running POSIX realtime applications, and requires additional flexibility in managing  relative  priorities	of
       applications.

   What Are the Side Effects of Raising the Value?
       Raising the value of the tunable may cause some operating system overhead due to larger and possibly more sparse run queues.

   When Should the Value of This Tunable Be Lowered?
       The default value of the tunable is already set to the minimum possible value.

   What Other Tunable Values Should Be Changed at the Same Time?
       None.

WARNINGS

       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 tun-
       able values, consult the documentation for the kernel software being installed.	For information about optional kernel  software  that  was
       factory installed on your system, see at

AUTHOR

       was developed by HP.

							     Tunable Kernel Parameters						 rtsched_numpri(5)
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