Hello,

 

I recently upgraded my server and its been running pretty smoothly for about a month however all of sudden It keeps crashing for some reason. 

 

From what I have noticed it mostly happens after Sonarr/Radarr starts an import. It doesn't happen every time mostly at random, could be a single file or 100 it just decides at one point to freeze up. After a reboot it won't happen again for a day or two or more then it will happen again. 

I tried taking a look at the syslog but it doesn't seem to indicate any issues.

 

any idea's?

 

syslog-192.168.2.36.log marge-diagnostics-20231109-1753.zip

Server is running out of RAM, 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/

Thank you Jorge!

 

I suspected it was something along those lines since whenever the server crashed and I had the dashboard page open, the ram would always be unusually high. Not max but it would freeze the page with the RAM at over 80%.

 

If I may ask a few follow up questions for my own curiosity

 

1. What line in the logs pointed towards RAM? I would like to get better at understanding this information to better diagnose things myslef

 

2. Can you go more into detail about Fragmented Ram? I kinda understand what you mean but is there any way to avoid this? 

 

Again thank you for your time and help, greatly apreaciated and why I love unraid and the community! 

Edited November 10, 20232 yr by Milzy

2 minutes ago, Milzy said:

1. What line in the logs pointed towards RAM? I would like to get better at understanding this information to better diagnose things myslef

E.g.:

Nov  9 16:33:30 Marge kernel: unpackerr invoked oom-killer: gfp_mask=0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), order=0, oom_score_adj=0

 

Anytime you see "something invoked oom-killer" means a process as killed to try and free up some RAM.

 

3 minutes ago, Milzy said:

2. Can you go more into detail about Fragmented Ram? I kinda understand what you mean but is there any way to avoid this? 

Not much you can do to avoid that, it's a Linux thing, just important to understand that you can run out of RAM before all the RAM is showing as used.