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nswapdev(5)							   nswapdev(5)

NAME
       nswapdev - maximum number of devices that can be enabled for swap

VALUES
   Default
   Allowed values
DESCRIPTION
       Swap  devices are managed in a table for easier indexing in the kernel.
       sets the kernel variable responsible for the upper limit on this table,
       and thus the upper limit to devices which can be used for swap.

   Who is Expected to Change This Tunable?
       Anyone.

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

   When Should the Value of This Tunable Be Raised?
       If  another swap device is added to the system which would increase the
       number of devices above and returns to the caller  (see	the  swapon(2)
       manpage).

   What Are the Side Effects of Raising the Value?
       More  devices  can  be  added to the system, and the kernel will need a
       little more memory for the table.  A small performance side  effect  of
       the  kernel having to scan more devices to check for a duplicate device
       during is also true, but realistically negligible.

   When Should the Value of This Tunable Be Lowered?
       Only if you are sure the system will never go over a certain number  of
       swap devices, and you wish to lower this tunable to save a small amount
       of kernel memory and kernel performance during operations.

   What Are the Side Effects of Lowering the Value?
       No side effects other than the primary and presumably desired new limi‐
       tation on the number of swap devices.

   What Other Tunable Values Should Be Changed at the Same Time?
       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		   nswapdev(5)

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