File swaps on cluster node

[frankz]

Hello everyone, on a cluster of 3 nodes I have always noticed that despite the ram memory available in the system, the swap file is often used exceeding its declared capacity e.g. 8 GB usage +70 %

I read an article on the internet and asked for your opinion ....


https://blog.lbdg.me/proxmox-best-performance-disable-swappiness/

 

[aaron]

For a better understanding what swap is also used for, even if there is plenty of swap available, you can read the following article: https://chrisdown.name/2018/01/02/in-defence-of-swap.html

If you do have more than enough RAM available, feel free to disable swap

 

[frankz]

For a better understanding what swap is also used for, even if there is plenty of swap available, you can read the following article: https://chrisdown.name/2018/01/02/in-defence-of-swap.html

If you do have more than enough RAM available, feel free to disable swap

Ok or do you recommend activating the swap beyond, for example, the 80 % threshold?

 

[aaron]

I never dug deep into the whole "optimize swapiness levels" stuff, so I cannot really recommend anything . I personally make sure I have plenty of RAM available and don't use swap.