5 simple steps to increase the swap space on Linux.

4. Now enable the swap area on newly created file using swapon command.

[root@kalwa1 tmp]# swapon -v testswap
swapon on testswap
swapon: /tmp/testswap: found swap signature: version 1, page-size 4, same byte o
rder

5. Now test if the swap space is increased by 10MB with following commands

[root@kalwa1 tmp]# cat /proc/swaps
Filename Type Size Used Priority
/dev/dm-1 partition 4128760 0 -1
/tmp/testswap file 10232 0 -2

[root@kalwa1 tmp]# free -m
 total used free shared buffers cached
Mem: 2003 213 1789 0 13 77
-/+ buffers/cache: 122 1880
Swap: 4041 0 4041

Or you can use top command