[Unraid-6.3.5] High load (50+) when copying large files from one share to another

[Phoenix26]

Hi,

 

I'm having an issue when large files (10GB+) are copied from one share (/downloads, use cache=yes) to another (/shared, use cache=yes). This is usually done by a cp script in rutorrent or when Sonarr is importing files, these are both running in seperate dockers.

 

Doing this often causes extremely high load for a short while and all other services on the machine become temporarily unresponsive. Once the load has dropped again if I try to interaction with docker containers (start, stop, restart etc) the commands fail.

 

I noticed lots of memory issues in the syslog but I'm not 100% sure what is running out of memory? Docker as a whole or a specific container? 

 

Diagnostics attached.

 

Thanks

 

alphav2-diagnostics-20171228-1135.zip

[JorgeB]

This usually helps with the memory issues:

 

https://forums.lime-technology.com/topic/55910-out-of-memory-errors-detected-on-your-server-call-traces-found-on-your-server/?do=findComment&comment=546982

 

[Phoenix26]

On 28/12/2017 at 1:34 PM, johnnie.black said:

This usually helps with the memory issues:

 

https://forums.lime-technology.com/topic/55910-out-of-memory-errors-detected-on-your-server-call-traces-found-on-your-server/?do=findComment&comment=546982

 

 

Thank you, this server did originally only have 8gb of RAM and was upgraded to 32gb so this matches what others have mentioned in that thread.

 

I've updated..

vm.dirty_background_ratio from 10 to 1

vm.dirty_ratio from 20 to 2

 

Will see what difference this make.

 

EDIT: Since making these changes the server has been much more stable! Thanks again.