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dtaht / sch_cake

Out of tree build for the new cake qdisc
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Router and PC behind Router Tin comparing. #148

Closed yutayu closed 3 years ago

yutayu commented 3 years ago

Router tc -st qdisc show dev eth0 qdisc cake 8079: root refcnt 2 bandwidth 809Kbit diffserv3 dual-srchost nonat nowash ack-filter-aggressive split-gso rtt 30.0ms atm overhead 10 Sent 64640015 bytes 338336 pkt (dropped 9916, overlimits 182413 requeues 0) backlog 0b 0p requeues 0 memory used: 124352b of 4Mb capacity estimate: 809Kbit min/max network layer size: 39 / 1478 min/max overhead-adjusted size: 106 / 1643 average network hdr offset: 14

               Bulk  Best Effort        Voice

thresh 50560bit 809Kbit 202248bit target 362.2ms 22.6ms 90.5ms interval 724.4ms 51.1ms 181.1ms pk_delay 0us 4.3ms 0us av_delay 0us 343us 0us sp_delay 0us 14us 0us backlog 0b 0b 0b pkts 0 348252 0 bytes 0 67311175 0 way_inds 0 2394 0 way_miss 0 23707 0 way_cols 0 0 0 drops 0 2103 0 marks 0 0 0 ack_drop 0 7813 0 sp_flows 0 2 0 bk_flows 0 1 0 un_flows 0 0 0 max_len 0 2984 0 quantum 300 300 300

qdisc ingress ffff: parent ffff:fff1 ---------------- Sent 624571913 bytes 500770 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0

PC

tc -s qdisc show dev eno1 qdisc cake 8013: root refcnt 2 bandwidth 99500Kbit diffserv3 triple-isolate nonat nowash ack-filter-aggressive split-gso rtt 1.0ms noatm overhead 38 mpu 84 Sent 31474530 bytes 284753 pkt (dropped 0, overlimits 2255 requeues 0) backlog 0b 0p requeues 0 memory used: 13640b of 4Mb capacity estimate: 99500Kbit min/max network layer size: 28 / 1500 min/max overhead-adjusted size: 84 / 1538 average network hdr offset: 14

               Bulk  Best Effort        Voice

thresh 6218Kbit 99500Kbit 24875Kbit target 2.9ms 182us 730us interval 5.8ms 1.1ms 1.7ms pk_delay 0us 14us 6us av_delay 0us 3us 2us sp_delay 0us 1us 1us backlog 0b 0b 0b pkts 0 283036 1717 bytes 0 31310341 164189 way_inds 0 16 0 way_miss 0 1834 9 way_cols 0 0 0 drops 0 0 0 marks 0 0 0 ack_drop 0 0 0 sp_flows 0 1 0 bk_flows 0 1 0 un_flows 0 0 0 max_len 0 3748 590 quantum 300 1514 759

qdisc ingress ffff: parent ffff:fff1 ---------------- Sent 612883973 bytes 441611 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0

My router cake doesn't categorize voice packets sent from my PC and that is categorized as voice packets.

dtaht commented 3 years ago

Voip traffic is generally indistinguishable from "sparse" traffic - the sp_flows metric - which is hard to hold a number to as it is so sparse. IF you wish to classify using dscp markings from the client, or an iptables rule (typically from an accepted range of udp port numbers), you can force those packets into the voice class, but by and large, sparse is sparse, and additional classification unnessessary.

yutayu commented 3 years ago

@dtaht Thanks.