What is the kswapd0 process eating up the entire CPU on digitalocean Ubuntu 14?

Question

ubuntu

There is a droplet for DO, 2gb of RAM, there was always enough. Today, everything suddenly began to hang so that the site could not be opened. In the console, it says that the processor is being spent at 99% by the kswapd0 process. Reboot didn't help. In addition, the indicator of working with the disk in the DO admin panel goes off scale:


How to be, what to do, what kind of process is this? I tried to google, but I did not find anything sensible

UDP: at first I indicated that Ubuntu 12, but as I remember, the 14th is more likely. Standard DO image for wordpress

Answer 1

the server does not have enough memory and it adds it to the swap file,
and this is the process that works with the swap file

Answer 2

This is the swap process. Therefore, work with the disk is growing.
There are many solutions on Google, just type kswapd0.
First link: https://bbs.archlinux.org/viewtopic.php?id=144702