I have been tested DRR using fq_codel and codel in an extremely congested network and I can confirm that the average packet latency has been improved quite well comparing to fifo, the latency is keep at low levels and the throughput tends to be stable. On Thu, Feb 19, 2015 at 11:14 PM, Dave Taht <dave.taht@xxxxxxxxx> wrote: > On Thu, Feb 19, 2015 at 2:10 PM, Ronald Pina <pinaronald@xxxxxxxxx> wrote: >> Hi , the solution is: >> >> # adding the root qdisc and assign Deficit Round Robin to it >> tc qdisc add dev eth0 root handle 1: drr >> # >> # adding classes to the root qdisc , every class has a quantum of 1514 >> which represent the frame size >> >> tc class add dev eth0 parent 1: classid 1:1 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:2 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:3 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:4 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:5 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:6 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:7 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:8 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:9 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:10 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:11 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:12 drr quantum 1514 >> tc class add dev eth0 parent 1: classid 1:13 drr quantum 1514 >> >> # assigning a pfifo dqisc with queue size of 256 packets to every class >> tc qdisc add dev eth0 parent 1:1 handle 1001: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:2 handle 12: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:3 handle 13: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:4 handle 14: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:5 handle 15: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:6 handle 16: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:7 handle 17: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:8 handle 18: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:9 handle 19: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:10 handle 20: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:11 handle 21: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:12 handle 22: pfifo limit 256 >> tc qdisc add dev eth0 parent 1:13 handle 23: pfifo limit 256 > > Once you get fed up with that, you might want to try fq_codel instead of > pfifo, attached to drr, instead. The aggregate packet limit here of 3072? > packets is going to give you aggregate bufferbloat big time if you > are sending data to all stations at full rate. > > Or just codel. > >> # every filter match the source ip of every packet and is directed to >> the appropriate class >> #the arp filter is very important >> tc filter add dev eth0 protocol arp parent 1:0 prio 1 u32 match u32 >> 0 0 flowid 1:11 >> # >> tc filter add dev eth0 parent 1:0 protocol ip prio 2 u32 match ip >> src 192.168.1.115 classid 1:1 >> tc filter add dev eth0 parent 1:0 protocol ip prio 3 u32 match ip >> src 192.168.1.117 classid 1:2 >> tc filter add dev eth0 parent 1:0 protocol ip prio 4 u32 match ip >> src 192.168.1.120 classid 1:3 >> tc filter add dev eth0 parent 1:0 protocol ip prio 5 u32 match ip >> src 192.168.1.121 classid 1:4 >> tc filter add dev eth0 parent 1:0 protocol ip prio 6 u32 match ip >> src 192.168.1.122 classid 1:5 >> tc filter add dev eth0 parent 1:0 protocol ip prio 7 u32 match ip >> src 192.168.1.123 classid 1:6 >> tc filter add dev eth0 parent 1:0 protocol ip prio 8 u32 match ip >> src 192.168.1.124 classid 1:7 >> tc filter add dev eth0 parent 1:0 protocol ip prio 9 u32 match ip >> src 192.168.1.125 classid 1:8 >> tc filter add dev eth0 parent 1:0 protocol ip prio 10 u32 match ip >> src 192.168.1.126 classid 1:9 >> tc filter add dev eth0 parent 1:0 protocol ip prio 11 u32 match ip >> src 192.168.1.127 classid 1:10 >> tc filter add dev eth0 parent 1:0 protocol ip prio 12 u32 match ip >> dst 192.168.1.0/24 classid 1:12 >> tc filter add dev eth0 parent 1:0 protocol ip prio 13 u32 match ip >> dst 0.0.0.0/0 classid 1:13 >> # >> I have tested it and is working correctly. >> >> Regards >> >> On Thu, Feb 19, 2015 at 10:36 AM, rp-user <pinaroland@xxxxxxxxx> wrote: >>> In this case the default qdisc must be 2:10 but which under drr handle 2: >>> How can i configure this? What do think about the tbf which seems >>> strange when after 50sec all bandwith are dropped. >>> Regards >>> On Thu, Feb 19, 2015 at 2:48 AM, Dave Taht <dave.taht@xxxxxxxxx> wrote: >>>> at first glance, default 0 is wrong for htb. That sends all packets >>>> through the default qdisc. >>> -- >>> To unsubscribe from this list: send the line "unsubscribe lartc" in >>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>> More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- > Dave Täht > > thttp://www.bufferbloat.net/projects/bloat/wiki/Upcoming_Talks -- To unsubscribe from this list: send the line "unsubscribe lartc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
