NAME

altmem — Alternative memory disk driver

SYNOPSIS

altmem* at altmemdev?

DESCRIPTION

The altmem driver enables use of physical memory that is normally inaccessible by the machine-dependent pmap(9) as a swap device.

When an alternative memory disk device is present, this device is generally preferred to hard disk-based swap space. See the swapctl(8) and fstab(5) man pages for instructions on how to assign priorities to swap devices.

FILES

/dev/altmem??

block mode alternative memory disk devices.

/dev/raltmem??

raw mode alternative memory disk devices.

SEE ALSO

md(4), fstab(5), swapctl(8)

HISTORY

The altmem device driver appeared in NetBSD 6.0.

AUTHORS

Jared D. McNeill <jmcneill@NetBSD.org>