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STRCTLSZ(5)							   STRCTLSZ(5)

NAME
       STRCTLSZ - maximum size of streams message control (bytes)

VALUES
   Failsafe
   Default
   Allowed values
   Recommended values
DESCRIPTION
       limits the maximum number of bytes of control data that can be inserted
       by in the control portion of any streams message on the system.	If the
       tunable	is  set	 to  zero,  there is no limit on how many bytes can be
       placed in the control segment of the message.

       returns if the buffer being sent is larger than the current value of

   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?
       The tunable should be increased	by  any	 customer  if  the  customer's
       STREAMS	module/driver(s)  require more bytes in the control portion of
       any streams message than the current value.

   What Are the Side Effects of Raising the Value of This Tunable?
       The kernel will use more memory.	 During low memory situations, it  may
       bring down system performance due to frequent swapping.

   When Should the Value of This Tunable Be Lowered?
       The  tunable could be lowered by any customer if the customer's STREAMS
       module/driver(s) do not require a longer message size  in  the  control
       portion than the current value.

   What Are the Side Effects of Lowering the Value of This Tunable?
       Possible	 improper  functioning in any of the STREAMS module/driver(s).
       Possible performance degradation, particularly in networking.

   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 parame‐
       ter  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  val‐
       ues.  For information about the effects of installation on tunable val‐
       ues, 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		   STRCTLSZ(5)

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