On 8/22/17 6:02 AM, Eric Dumazet wrote: >> >> net.core.netdev_max_backlog=10000 > This is an insane backlog. >
https://www.kernel.org/doc/Documentation/networking/scaling.txt "== Suggested Configuration Flow limit is useful on systems with many concurrent connections, where a single connection taking up 50% of a CPU indicates a problem. In such environments, enable the feature on all CPUs that handle network rx interrupts (as set in /proc/irq/N/smp_affinity). The feature depends on the input packet queue length to exceed the flow limit threshold (50%) + the flow history length (256). Setting net.core.netdev_max_backlog to either 1000 or 10000 performed well in experiments."
