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dynamic_pager(8) BSD System Manager's Manual dynamic_pager(8)
dynamic_pager -- dynamic pager external storage manager
dynamic_pager [-F filename] [-S filesize] [-H high-water-trigger] [-L low-water-trigger]
The dynamic_pager daemon manages a pool of external swap files which the kernel uses to sup-
port demand paging. This pool is expanded with new swap files as load on the system
increases, and contracted when the swapping resources are no longer needed. The
dynamic_pager daemon also provides a notification service for those applications which wish
to receive notices when the external paging pool expands or contracts.
-F The base name of the filename to use for the external paging files. By default this
-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 external 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.
/private/var/vm/swapfile* Default external paging files.
Mac OS X July 8, 2003 Mac OS X
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