1. 

 more /proc/swaps

2. 

cd /var/tmp

3. 

dd if=/dev/zero of=swapfile1 bs=1024 count=1048576

dd if=/dev/zero of=swapfile2 bs=1024 count=1048576

4.

/sbin/mkswap -c -v1 /var/tmp/swapfile1

/sbin/mkswap -c -v1 /var/tmp/swapfile2

5.

/sbin/swapon /var/tmp/swapfile1

/sbin/swapon /var/tmp/swapfile2

6.

swapon -a

7.

swapon /var/tmp/swapfile1

swapon /var/tmp/swapfile2

8.

free

http://www.artwork.com/gdsii/qckvu/faq/linux_swap.htm