On Fri, Oct 23, 2020 at 6:06 PM Ricardo Dias <rd...@memsql.com> wrote:
> And what about the loopback interface? Why couldn't the loopback > interface also use a single RX queue? > Loopback is using a per-cpu queue, with no crossing, for efficiency. That means : whenever a packet is sent on lo interface from CPU X, it is put on CPU X backlog queue. If the connect() and sendmsg() are run from different cpus, then the ACK (from last packet of 3WH) and the data packet might land on different queues.
