"kswapd0" is taking up some of my device's CPU time even though I don't have any swap. What's going on?

Using Ozcan ROM 6.3 on my Samsung Galaxy S4, I'm observing **kswapd0** process making CPU laggy. The same thing happened on another TW KK ROM - Omega. After researching on it for weeks, I realized that it's the process that does the SWAP job - transferring RAM contents to storage when memory is low. ***Presently, I don't want to use SWAP, so the following are the workarounds that I tried to disable SWAP:*** - Tried Apps like **Swapper2, Reset Swap** to delete swapfile. The process vanishes for few seconds but it looks like the swapfile again gets created (checked by using command, free). - Used the command swapoff -a (to Stop swapping on all swap devices) but it gives me an **error -** swapoff: /etc/fstab: No such file or directory. **So, my Queries are as follows:** - Why and how does SWAP gets enabled automatically? Is the kernel or ROM responsible for it? - When actually could the SWAP partition be created when I didn't do it manually? On flashing the ROM? - What I'm doing wrong in the swapoff comand? After reading about the same error, I think it's related to the location of the swapfile. So, how can I know the location of the swapfile? Any suggestions on disabling the SWAP permanently or making kswapd0 use less CPU if the lag is not directly related to SWAP? (Originally posted on XDA )