Out of memory issue?

[shewishewi]

Hi All - 

 

I am new to unraid and recently setup my server with 64 GB of RAM running 20 dockers.

It seems that there may be a memory leak somewhere as I am getting warnings of memory filling up and sometimes the server becomes unresponsive forcing a restart.

 

I'm not able to pin point what it could be, could someone help me with this one? Included is the diagnositic information

 

Thank you!

 

Edited November 16, 2023 by shewishewi

[JorgeB]

If it's a one time thing you can ignore, if it keeps happening try limiting more the RAM for VMs and/or docker containers, the problem is usually not just about not enough RAM but more about fragmented RAM, alternatively a small swap file on disk might help, you can use the swapfile plugin:

 

https://forums.unraid.net/topic/109342-plugin-swapfile-for-691/

[shewishewi]

1 hour ago, JorgeB said:

If it's a one time thing you can ignore, if it keeps happening try limiting more the RAM for VMs and/or docker containers, the problem is usually not just about not enough RAM but more about fragmented RAM, alternatively a small swap file on disk might help, you can use the swapfile plugin:

 

https://forums.unraid.net/topic/109342-plugin-swapfile-for-691/

I've had the server freeze up on me quite a bit recently requiring a restart. I just added RAM limits to most of the unimportant dockers for now and uninstalled unnecessary plugins.

What does the swap file do ? is there a drawback in adding this ?

[JorgeB]

40 minutes ago, shewishewi said:

What does the swap file do ? is there a drawback in adding this ?

Mostly makes OOM errors less likely. If the device where the swap is fails the server may crash, depending on if swap was being used for anything critical.