How to tune `net.core.netdev_max_backlog` and `net.core.netdev_budget` sysctl kernel tunables?

Solution Verified - Updated -

Issue

  • How to tune net.core.netdev_max_backlog and net.core.netdev_budget sysctl kernel tunables?
  • How to solve errors in ethtool -S ethX such as:
    rx fw discards, fifo, desc, no bufs, buffer, buffers, drop, drops, miss, OOB, full, frags
    even though the ring buffer is at max using ethtool -G rx XXX?
  • Packet loss seen and columns in /proc/net/softnet_stat incrementing

Environment

  • Red Hat Enterprise Linux
  • Network interfaces

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