dynamic_pager man page on OpenDarwin

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dynamic_pager(8)	  BSD System Manager's Manual	      dynamic_pager(8)

NAME
     dynamic_pager — dynamic pager external storage manager

SYNOPSIS
     dynamic_pager [-F filename] [-S filesize] [-H high-water-trigger]
		   [-L low-water-trigger] [-P priority]

DESCRIPTION
     The dynamic_pager daemon manages a pool of external swap files which the
     kernel uses to support demand paging.  This pool is expanded with new
     swap files as load on the system increases, and contracted when the swap‐
     ping resources are no longer needed.  The dynamic_pager daemon also pro‐
     vides a notification service for those applications which wish to receive
     notices when the external paging pool expands or contracts.

OPTIONS
     -F	     The base name of the filename to use for the external paging
	     files.  By default this is /private/var/vm/swapfile.

     -S	     The fixed filesize [in bytes] to use for the paging files.	 By
	     default dynamic_pager uses variable sized paging files, using
	     larger sized files as paging demands increase.  The -S, -H and -L
	     options disable that default and cause dynamic_pager to use a
	     series of fixed sized external paging files.

     -H	     If there are less than high-water-trigger bytes free in the
	     external paging files, the kernel will signal dynamic_pager to
	     add a new external paging file.

     -L	     If there are more than low-water-trigger bytes free in the exter‐
	     nal paging files, the kernel will coalese in-use pages and signal
	     dynamic_pager to discard an external paging file.
	     Low-water-trigger must be greater than high-water-trigger +
	     filesize.

     -P	     This option is currently unimplemented.

FILES
     /private/var/vm/swapfile*	Default external paging files.

SEE ALSO
     macx_swapon(2), macx_swapoff(2).

Mac OS X			 July 8, 2003			      Mac OS X
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