[FFmpeg-user] Prevent Circular buffer overrun

[Jernej Stopinšek]

Hi, 

try to play around with kernel parameters and increase values for: 

net.ipv4.udp_rmem_min 
net.ipv4.udp_mem 
net.core.rmem_default 
net.core.rmem_max 
net.core.netdev_max_backlog 
net.core.netdev_budget 

also check interface Ring parameters: 
ethtool -g [interface] 

and increase RX and TX to maximum: 
in my case: 

ethtool -G eth0 rx 4096 tx 4096 


Check out this document: 
https://blog.packagecloud.io/eng/2016/06/22/monitoring-tuning-linux-networking-stack-receiving-data/ 

and enable RPS and RFS. 

This solved my problem with Circular buffer overrun when adding more instances.