Increase swap space in fedora 19

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You can increase swap size with 2 different ways:

Method A - Add a hard drive partition

1. With fdisk, cfdisk or any other tool (gui tool also) create a new partition with the size you want, let's say 2 GB and the name is /dev/sdc1

2. Now create this simple partition into swap

# mkswap /dev/sdc1

1. Enable the swap partition

# swapon /dev/sdc1

1. Make this swap persistent (after reboots), add the following line to the /etc/fstab file.

# /dev/sdc1       swap          swap   defaults        0 0

1. Verify whether the newly created swap area is available for your use.

# swapon -s

Filename                        Type   Size    Used    Priority

/dev/sda2     partition       4192956  0   -1 /dev/sdc1

partition       1048568 0       -2

Method B: Add a File

You can also use a file on your disk to use as swap.

1. Let's create a swap file with the name “myswapfile” under /root directory with a size of 2048MB (2GB).

# dd if=/dev/zero of=/root/myswapfile bs=1M count=2048

2048+0 records in 2048+0 records out

# ls -l /root/myswapfile
-rw-r--r--    1 root     root     1073741824 Aug 14 23:47 /root/myswapfile

1. Change the permission of the swap file so that only root can access it.

# chmod 600 /root/myswapfile

1. Make this file as a swap file using mkswap command.

# mkswap /root/myswapfile

1. Enable the newly created swapfile.

# swapon /root/myswapfile

1. Make swap file persistent after reboots, add the following line to the /etc/fstab file.

# cat /etc/fstab

/root/myswapfile      swap         swap   defaults     0 0

1. Verify whether the newly created swap area is available for your use.

# swapon -s
Filename                        Type            Size    Used   

Priority

/dev/sda2                       partition       4192956 0       -1
/root/myswapfile                file            1048568 0       -2

Please read more from aritcle source here.