Why NIC ring parameters are not pre-set at their Hardware max capabilities?
Check the NIC ring buffer: # ethtool -g eth0 Ring parameters for eth0: Pre-set maximums: RX: 4096 RX Mini: 0 RX Jumbo: 0 TX: 4096 Current hardware settings: RX: 256 RX Mini: 0 RX Jumbo: 0 TX: 256 One can set "RX/TX" up to the limit shown in the "Pre-set maximums" like: # ethtool -G eth0 rx 4096 rx 4096 Question is: by default;, why are these set so low (in e