Mounting as a temporary filesystem
To improve performance, your temporary filesystem (for example
/tmp, /u/tmp, or /usr/tmp), can be set up as
either an EAFS, AFS, S51K or
HTFS filesystem type. If you have any temporary
filesystems, you can select this option so
they are mounted as temporary filesystems automatically every time the
system is rebooted.
Temporary filesystems are updated less frequently and are recommended for use on filesystems containing temporary data only. If this option is used on /tmp, the overall system performance may improve.