Hi Sebastian, Since dslreports disable the ping due to high latency:
I did a ping test during the test: --- youtube-ui.l.google.com ping statistics --- 61 packets transmitted, 61 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 336.631/369.733/493.473/30.946 ms It looks to me that configuring the interval to be high for fq_codel (350ms) does improve the latency under load. On Sun, Jul 24, 2016 at 9:53 AM, Loganaden Velvindron <logana...@gmail.com> wrote: > I've set the interval to 350ms, by using advanced option: > > Result is better: > > http://www.dslreports.com/speedtest/4520697 > > > I will submit a patch for sqm-luci so that the interval is > configurable easily via web ui for African countries where the latency > tends to be of the order of 300ms to 600ms, particularly on 3g > connections. > > > tc -s qdisc > qdisc fq_codel 0: dev eth0 root refcnt 2 limit 1024p flows 1024 > quantum 300 target 5.0ms interval 100.0ms ecn > Sent 3493746 bytes 5455 pkt (dropped 0, overlimits 0 requeues 2) > backlog 0b 0p requeues 2 > maxpacket 256 drop_overlimit 0 new_flow_count 0 ecn_mark 0 > new_flows_len 0 old_flows_len 0 > qdisc htb 1: dev eth1 root refcnt 2 r2q 10 default 12 > direct_packets_stat 3 direct_qlen 1000 > Sent 4869533 bytes 18710 pkt (dropped 0, overlimits 8200 requeues 0) > backlog 0b 0p requeues 0 > qdisc fq_codel 110: dev eth1 parent 1:11 limit 1001p flows 1024 > quantum 300 target 41.1ms interval 350.0ms > Sent 12742 bytes 115 pkt (dropped 0, overlimits 0 requeues 0) > backlog 0b 0p requeues 0 > maxpacket 256 drop_overlimit 0 new_flow_count 84 ecn_mark 0 > new_flows_len 0 old_flows_len 1 > qdisc fq_codel 120: dev eth1 parent 1:12 limit 1001p flows 1024 > quantum 300 target 41.1ms interval 350.0ms > Sent 4854326 bytes 18569 pkt (dropped 85, overlimits 0 requeues 0) > backlog 0b 0p requeues 0 > maxpacket 1454 drop_overlimit 0 new_flow_count 4831 ecn_mark 0 > new_flows_len 1 old_flows_len 1 > qdisc fq_codel 130: dev eth1 parent 1:13 limit 1001p flows 1024 > quantum 300 target 41.1ms interval 350.0ms > Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) > backlog 0b 0p requeues 0 > maxpacket 256 drop_overlimit 0 new_flow_count 0 ecn_mark 0 > new_flows_len 0 old_flows_len 0 > qdisc ingress ffff: dev eth1 parent ffff:fff1 ---------------- > Sent 21938964 bytes 23336 pkt (dropped 0, overlimits 0 requeues 0) > backlog 0b 0p requeues 0 > qdisc mq 0: dev wlan0 root > Sent 18874833 bytes 18494 pkt (dropped 0, overlimits 0 requeues 2) > backlog 0b 0p requeues 2 > qdisc htb 1: dev ifb4eth1 root refcnt 2 r2q 10 default 10 > direct_packets_stat 0 direct_qlen 32 > Sent 22265602 bytes 23335 pkt (dropped 0, overlimits 5193 requeues 0) > backlog 0b 0p requeues 0 > qdisc fq_codel 110: dev ifb4eth1 parent 1:10 limit 1001p flows 1024 > quantum 300 target 5.0ms interval 350.0ms ecn > Sent 22265602 bytes 23335 pkt (dropped 0, overlimits 0 requeues 0) > backlog 0b 0p requeues 0 > maxpacket 1454 drop_overlimit 0 new_flow_count 4392 ecn_mark 0 > new_flows_len 1 old_flows_len 1 > > On Sat, Jul 23, 2016 at 10:59 PM, Loganaden Velvindron > <logana...@gmail.com> wrote: >> After going through: >> >> https://tools.ietf.org/html/draft-ietf-aqm-fq-codel-06 >> >> I think that I should remove the itarget and etarget, and set the >> Interval rather to 500ms. >> >> >> >> The _interval_ parameter has the same semantics as CoDel and is used >> to ensure that the minimum sojourn time of packets in a queue used as >> an estimator by the CoDel control algorithm is a relatively up-to- >> date value. That is, CoDel only reacts to delay experienced in the >> last epoch of length interval. It SHOULD be set to be on the order >> of the worst-case RTT through the bottleneck to give end-points >> sufficient time to react. >> >> The default interval value is 100 ms. >> >> The default interval value is not suited for my 3g connection where >> the worse-case RTT is much higher. >> >> >> >> On Sat, Jul 23, 2016 at 10:36 PM, Loganaden Velvindron >> <logana...@gmail.com> wrote: >>>> It seems the initial burst like behavior from the earlier test was >>>> a false positive; these test are still not beautiful, but at least they do >>>> not indicate that HTB+fq_codel as configured on your system do not suffer >>>> from uncontrolled bursty-ness. Unfortunately, I have no real insight or >>>> advice to offer how to improve your situation (short f setting the shaper >>>> rates considerably lower). >>>> BTW, “tc -d qdisc” and “tc -s disc” give a bit more information, >>>> and “tc class show dev eth1” and “tc class show dev ifb4eth1” will also >>>> offer more detail about your setup. >>>> >>>> >>>> Best Regards >>>> Sebastian >>>> >>>> >>>> >>> >>> tc -d qdisc: >>> >>> qdisc fq_codel 0: dev eth0 root refcnt 2 limit 1024p flows 1024 >>> quantum 300 target 5.0ms interval 100.0ms ecn >>> qdisc htb 1: dev eth1 root refcnt 2 r2q 10 default 12 >>> direct_packets_stat 5 ver 3.17 direct_qlen 1000 >>> qdisc fq_codel 110: dev eth1 parent 1:11 limit 1001p flows 1024 >>> quantum 300 target 500.0ms interval 100.0ms >>> qdisc fq_codel 120: dev eth1 parent 1:12 limit 1001p flows 1024 >>> quantum 300 target 500.0ms interval 100.0ms >>> qdisc fq_codel 130: dev eth1 parent 1:13 limit 1001p flows 1024 >>> quantum 300 target 500.0ms interval 100.0ms >>> qdisc ingress ffff: dev eth1 parent ffff:fff1 ---------------- >>> qdisc mq 0: dev wlan0 root >>> qdisc htb 1: dev ifb4eth1 root refcnt 2 r2q 10 default 10 >>> direct_packets_stat 0 ver 3.17 direct_qlen 32 >>> qdisc fq_codel 110: dev ifb4eth1 parent 1:10 limit 1001p flows 1024 >>> quantum 300 target 500.0ms interval 100.0ms ecn >>> >>> tc -s qdisc: >>> >>> qdisc fq_codel 0: dev eth0 root refcnt 2 limit 1024p flows 1024 >>> quantum 300 target 5.0ms interval 100.0ms ecn >>> Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) >>> backlog 0b 0p requeues 0 >>> maxpacket 256 drop_overlimit 0 new_flow_count 0 ecn_mark 0 >>> new_flows_len 0 old_flows_len 0 >>> qdisc htb 1: dev eth1 root refcnt 2 r2q 10 default 12 >>> direct_packets_stat 5 direct_qlen 1000 >>> Sent 23456195 bytes 109776 pkt (dropped 0, overlimits 86210 requeues 0) >>> backlog 0b 4p requeues 0 >>> qdisc fq_codel 110: dev eth1 parent 1:11 limit 1001p flows 1024 >>> quantum 300 target 500.0ms interval 100.0ms >>> Sent 14760 bytes 164 pkt (dropped 0, overlimits 0 requeues 0) >>> backlog 0b 0p requeues 0 >>> maxpacket 256 drop_overlimit 0 new_flow_count 163 ecn_mark 0 >>> new_flows_len 1 old_flows_len 0 >>> qdisc fq_codel 120: dev eth1 parent 1:12 limit 1001p flows 1024 >>> quantum 300 target 500.0ms interval 100.0ms >>> Sent 23440300 bytes 109600 pkt (dropped 115, overlimits 0 requeues 0) >>> backlog 5816b 4p requeues 0 >>> maxpacket 1454 drop_overlimit 0 new_flow_count 15749 ecn_mark 0 >>> new_flows_len 0 old_flows_len 1 >>> qdisc fq_codel 130: dev eth1 parent 1:13 limit 1001p flows 1024 >>> quantum 300 target 500.0ms interval 100.0ms >>> Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) >>> backlog 0b 0p requeues 0 >>> maxpacket 256 drop_overlimit 0 new_flow_count 0 ecn_mark 0 >>> new_flows_len 0 old_flows_len 0 >>> qdisc ingress ffff: dev eth1 parent ffff:fff1 ---------------- >>> Sent 190858989 bytes 149884 pkt (dropped 0, overlimits 0 requeues 0) >>> backlog 0b 0p requeues 0 >>> qdisc mq 0: dev wlan0 root >>> Sent 194287835 bytes 153002 pkt (dropped 0, overlimits 0 requeues 7) >>> backlog 0b 0p requeues 7 >>> qdisc htb 1: dev ifb4eth1 root refcnt 2 r2q 10 default 10 >>> direct_packets_stat 0 direct_qlen 32 >>> Sent 192953486 bytes 149877 pkt (dropped 0, overlimits 41505 requeues 0) >>> backlog 0b 0p requeues 0 >>> qdisc fq_codel 110: dev ifb4eth1 parent 1:10 limit 1001p flows 1024 >>> quantum 300 target 500.0ms interval 100.0ms ecn >>> Sent 192953486 bytes 149877 pkt (dropped 0, overlimits 0 requeues 0) >>> backlog 0b 0p requeues 0 >>> maxpacket 1454 drop_overlimit 0 new_flow_count 16778 ecn_mark 0 >>> new_flows_len 1 old_flows_len 2 >>> >>> >>> tc class show dev eth1 >>> class htb 1:11 parent 1:1 leaf 110: prio 1 rate 128Kbit ceil 100Kbit >>> burst 1600b cburst 1600b >>> class htb 1:1 root rate 300Kbit ceil 300Kbit burst 1599b cburst 1599b >>> class htb 1:10 parent 1:1 prio 0 rate 300Kbit ceil 300Kbit burst 1599b >>> cburst 1599b >>> class htb 1:13 parent 1:1 leaf 130: prio 3 rate 50Kbit ceil 284Kbit >>> burst 1600b cburst 1599b >>> class htb 1:12 parent 1:1 leaf 120: prio 2 rate 50Kbit ceil 284Kbit >>> burst 1600b cburst 1599b >>> class fq_codel 110:188 parent 110: >>> class fq_codel 120:3d6 parent 120: >>> >>> >>> tc class show dev ifb4eth1: >>> class htb 1:10 parent 1:1 leaf 110: prio 0 rate 19600Kbit ceil >>> 19600Kbit burst 1597b cburst 1597b >>> class htb 1:1 root rate 19600Kbit ceil 19600Kbit burst 1597b cburst 1597b >>> class fq_codel 110:2f1 parent 110: >>> class fq_codel 110:330 parent 110: >>> >>> I changed the target from 350ms to 500ms for both ingress and egree, >>> and the throughput seem to be better: >>> >>> http://www.dslreports.com/speedtest/4515961 _______________________________________________ Cake mailing list Cake@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/cake
