swaptab man page on NeXTSTEP

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SWAPTAB(5)							    SWAPTAB(5)

NAME
       swaptab - static table of paging files

SYNOPSIS
       /etc/swaptab

DESCRIPTION
       The  /etc/swaptab  file	contains entries for files that can be enabled
       for system paging/swapping.  This file is  read	automatically  by  the
       mach_swapon(8)  command	at  system  startup  time.  If you change this
       file, the changes will not take effect until the system is rebooted.

       An entry for a paging file consists of a line of the following form:

	      file   [option[,option]...] [# comment]

       file		   is the pathname of the file to page into

       option		   is one of:

			   prefer Enable this file  as	a  "preferred"	paging
				  area.	   The	 system	  will	preferentially
				  allocate space in this paging file over non-
				  preferred paging files.

			   noauto Do  not enable this file when mach_swapon -a
				  is called.

			   lowat=size
				  Attempt to shrink the file down to  the  low
				  water	 mark, size, when paging resources are
				  freed.  If size equals zero, then the paging
				  file does not shrink as resources are freed.

			   hiwat=size
				  Do  not  grow the paging file above the high
				  water mark, size.  If size is zero then  the
				  file will grow as large as needed.

			   nocompress
				  Do not compress the swapfile.	 Normally, the
				  swapfile is compressed, resulting in reduced
				  disk	  usage	   and	  increased   swapping
				  performance (there is less to	 swap).	  This
				  option will turn this feature off.

       comment		   Anything preceded by a # is ignored.

EXAMPLE
       #
       #       /etc/swaptab
       #
       /private/vm/swapfile    lowat=20971520  # 20 Meg low water mark

FILES
       /etc/swaptab

SEE ALSO
       mach_swapon(2), mach_swapon(8)

WARNINGS
       Entries beginning with whitespace will be ignored.

NeXT Computer, Inc.		 March 1, 1989			    SWAPTAB(5)
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