swap(1M) UNIX System V swap(1M)
NAME
swap - swap administrative interface
SYNOPSIS
/usr/sbin/swap -a swapname swaplow swaplen
/usr/sbin/swap -d swapname swaplow
/usr/sbin/swap -l [ -s ]
/usr/sbin/swap -s
DESCRIPTION
swap provides a method of adding, deleting, and monitoring the system
swap areas used by the memory manager. The following options are
recognized:
-a Add the specified swap area. swapname is the name of the block
special partition, e.g., /dev/dsk/0s2 or a regular file. swaplow is
the offset in 512-byte blocks into the partition where the swap area
should begin. swaplen is the length of the swap area in 512-byte
blocks. This option can only be used by the super-user. If
additional swap areas are added, it is normally done during the
system start up routine /etc/rc2.d when going into multi-user mode.
-d Delete the specified swap area. swapname is the name of block
special partition, e.g., /dev/dsk/c1d0s1 or a regular file. swaplow
is the offset in 512-byte blocks into the the swap area to be
deleted. Using this option marks the swap area as ``INDEL'' (in the
process of being deleted). The system will not allocate any new
blocks from the area, and will try to free swap blocks from it. The
area will remain in use until all blocks from it are freed. This
option can be used only by the super-user.
-l List the status of all the swap areas. The output has five columns:
path The path name for the swap area.
dev The major/minor device number in decimal if it is a block
special device; zeros otherwise.
swaplo The swaplow value for the area in 512-byte blocks.
blocks The swaplen value for the area in 512-byte blocks.
free The number of free 512-byte blocks in the area. If the swap
area is being deleted, the word INDEL will be printed to the
right of this number.
-s Print the following information about total swap space usage:
allocated The amount of swap space (in 512-byte blocks) allocated
to private pages.
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swap(1M) UNIX System V swap(1M)
reserved The number of swap space (in 512-bytes blocks) not
currently allocated, but claimed by memory mappings that
have not yet created private pages.
used The total amount of swap space, in 512-byte blocks, that
is either allocated or reserved.
available The total swap space, in 512-byte blocks, that is
currently available for future reservation and
allocation.
NOTES
No check is done to see if a swap area being added overlaps with an
existing file system.
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