swap(1M) 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/c8d0s1 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/rc when
going into multi-user mode.
-d Delete the specified swap area. swapname is the name of block
special partition, e.g., /dev/dsk/c8d0s1 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.
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swap(1M) swap(1M)
-s Print the following information about total swap space usage:
allocated The amount of swap space (in 512-byte blocks)
allocated to private pages.
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.
WARNINGS
No check is done to see if a swap area being added overlaps with an
existing file system.
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