Swap Partition And Swap File In RHEL 4
#swapoff –a
# fdisk /dev/hda
Create a new partition of 2*RAM and assign the id 82 which is allocated for swap partition.
#mkswap –v1 /dev/hda15
-v1 switch is used for version number.
Add an entry in /etc/fstab file
# vi /etc/fstab
/dev/hda15 swap swap defaults 0 0
Activate the swap partition using
#swapon –a (which reads /etc/fstab and turns on all the swap entries in the list.
# swapon –s (is used to check the status of swap partition.)
Creating a swap file
#swapoff –a
#dd if=/dev/zero of=swapfile bs=512M count=1
#mkswap –v1 /root/swapfile
Add an entry in the /etc/rc.local
#vi /etc/rc.local
Swapon /root/swapfile
