SWAPTAB(5)SWAPTAB(5)NAMEswaptab - 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 ALSOmach_swapon(2), mach_swapon(8)WARNINGS
Entries beginning with whitespace will be ignored.
NeXT Computer, Inc. March 1, 1989 SWAPTAB(5)