On 16 May 2016 at 02:07, Eric Dumazet <eric.duma...@gmail.com> wrote: > On Mon, 2016-05-16 at 01:34 +0300, Roman Yeryomin wrote: > >> qdisc fq_codel 8003: parent :3 limit 1024p flows 16 quantum 1514 >> target 80.0ms ce_threshold 32us interval 100.0ms ecn >> Sent 1601271168 bytes 1057706 pkt (dropped 1422304, overlimits 0 requeues >> 17) >> backlog 1541252b 1018p requeues 17 >> maxpacket 1514 drop_overlimit 1422304 new_flow_count 35 ecn_mark 0 >> new_flows_len 0 old_flows_len 1 > > Why do you have ce_threshold set ? You really should not (even if it > does not matter for the kind of traffic you have at this moment)
No idea, it was there always. How do I unset it? Setting it to 0 doesn't help. > If your expected link speed is around 1Gbps, or 80,000 packets per > second, then you have to understand that 1024 packets limit is about 12 > ms at most. > > Even if the queue is full, max sojourn time of a packet would be 12 ms. > > I really do not see how 'target 80 ms' could be hit. Well, as I said, I've tried different options. Neither target 20ms (as Dave proposed) not 12ms save the situation. > You basically have FQ, with no Codel effect, but with the associated > cost of Codel (having to take timestamps) > > >
