Hello, I am using tc for traffic shaping. End users have slowness issue. In my case, I see overlimits in root qdisc stats. However none of the children of this root has any overlimits. I have read something about tagged VLAN interfaces tc issues. I have changed txqueuelen of the VLAN interface from 0 to 1000. However, nothing has changed. Do you have any idea for it? Kernel: 3.4.52-9 Hierarchy image: http://tinypic.com/r/2e4do4w/5 tc list: ### eth0: queueing disciplines qdisc pfifo_fast 0: root refcnt 2 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 ### eth1: queueing disciplines qdisc pfifo_fast 0: root refcnt 2 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 ### eth2: queueing disciplines qdisc pfifo_fast 0: root refcnt 2 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 ### eth3: queueing disciplines qdisc pfifo_fast 0: root refcnt 2 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 ### eth1.103: queueing disciplines qdisc htb 1: root refcnt 2 r2q 10 default 10 direct_packets_stat 8 qdisc sfq 10: parent 1:10 limit 127p quantum 1514b perturb 10sec ### eth1.103: traffic classes class htb 1:10 parent 1:2 leaf 10: prio 3 rate 1000Mbit ceil 1000Mbit burst 1375b cburst 1375b class htb 1:18 parent 1:2 prio 3 rate 5000Kbit ceil 20000Kbit burst 1600b cburst 1600b class htb 1:2 root rate 1000Mbit ceil 1000Mbit burst 1375b cburst 1375b class htb 1:17 parent 1:2 prio 3 rate 5000Kbit ceil 10000Kbit burst 1600b cburst 1600b ### eth3.500: queueing disciplines qdisc htb 1: root refcnt 2 r2q 10 default 10 direct_packets_stat 58 qdisc sfq 10: parent 1:10 limit 127p quantum 1514b perturb 10sec ### eth3.500: traffic classes class htb 1:10 parent 1:2 leaf 10: prio 3 rate 1000Mbit ceil 1000Mbit burst 1375b cburst 1375b class htb 1:18 parent 1:2 prio 3 rate 5000Kbit ceil 20000Kbit burst 1600b cburst 1600b class htb 1:2 root rate 1000Mbit ceil 1000Mbit burst 1375b cburst 1375b class htb 1:17 parent 1:2 prio 3 rate 5000Kbit ceil 10000Kbit burst 1600b cburst 1600b ### tun0: queueing disciplines qdisc pfifo_fast 0: root refcnt 2 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 ################################################################### tc stats: ### eth0: queueing disciplines qdisc pfifo_fast 0: root refcnt 2 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 ### eth1: queueing disciplines qdisc pfifo_fast 0: root refcnt 2 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 1230265496511 bytes 2712433819 pkt (dropped 742, overlimits 0 requeues 34450305) backlog 0b 0p requeues 34450305 ### eth2: queueing disciplines qdisc pfifo_fast 0: root refcnt 2 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 1196681965128 bytes 966727451 pkt (dropped 0, overlimits 0 requeues 21601) backlog 0b 0p requeues 21601 ### eth3: queueing disciplines qdisc pfifo_fast 0: root refcnt 2 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 2619199512824 bytes 2365278417 pkt (dropped 0, overlimits 0 requeues 1245807) backlog 0b 0p requeues 1245807 ### eth1.103: queueing disciplines qdisc htb 1: root refcnt 2 r2q 10 default 10 direct_packets_stat 8 Sent 8984423 bytes 9645 pkt (dropped 0, overlimits 185 requeues 0) backlog 0b 0p requeues 0 qdisc sfq 10: parent 1:10 limit 127p quantum 1514b perturb 10sec Sent 8690271 bytes 9361 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 ### eth1.103: traffic classes class htb 1:10 parent 1:2 leaf 10: prio 3 rate 1000Mbit ceil 1000Mbit burst 1375b cburst 1375b Sent 8695516 bytes 9365 pkt (dropped 0, overlimits 0 requeues 0) rate 289672bit 49pps backlog 0b 0p requeues 0 lended: 7743 borrowed: 0 giants: 0 tokens: 141 ctokens: 141 class htb 1:18 parent 1:2 prio 3 rate 5000Kbit ceil 20000Kbit burst 1600b cburst 1600b Sent 281287 bytes 272 pkt (dropped 0, overlimits 0 requeues 0) rate 560bit 1pps backlog 0b 0p requeues 0 lended: 129 borrowed: 85 giants: 0 tokens: 38813 ctokens: 9704 class htb 1:2 root rate 1000Mbit ceil 1000Mbit burst 1375b cburst 1375b Sent 8976803 bytes 9637 pkt (dropped 0, overlimits 0 requeues 0) rate 290232bit 50pps backlog 0b 0p requeues 0 lended: 85 borrowed: 0 giants: 0 tokens: 141 ctokens: 141 class htb 1:17 parent 1:2 prio 3 rate 5000Kbit ceil 10000Kbit burst 1600b cburst 1600b Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) rate 0bit 0pps backlog 0b 0p requeues 0 lended: 0 borrowed: 0 giants: 0 tokens: 40000 ctokens: 20000 ### eth3.500: queueing disciplines qdisc htb 1: root refcnt 2 r2q 10 default 10 direct_packets_stat 58 Sent 1254990117 bytes 972923 pkt (dropped 0, overlimits 713944 requeues 0) backlog 0b 61p requeues 0 qdisc sfq 10: parent 1:10 limit 127p quantum 1514b perturb 10sec Sent 971604836 bytes 766585 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 ### eth3.500: traffic classes class htb 1:10 parent 1:2 leaf 10: prio 3 rate 1000Mbit ceil 1000Mbit burst 1375b cburst 1375b Sent 971752789 bytes 766697 pkt (dropped 0, overlimits 0 requeues 0) rate 64400Kbit 6270pps backlog 0b 0p requeues 0 lended: 574472 borrowed: 0 giants: 0 tokens: 0 ctokens: 0 class htb 1:18 parent 1:2 prio 3 rate 5000Kbit ceil 20000Kbit burst 1600b cburst 1600b Sent 283364778 bytes 206305 pkt (dropped 0, overlimits 0 requeues 0) rate 18813Kbit 1700pps backlog 0b 60p requeues 0 lended: 21480 borrowed: 58766 giants: 0 tokens: -210552 ctokens: -17520 class htb 1:2 root rate 1000Mbit ceil 1000Mbit burst 1375b cburst 1375b Sent 1254969764 bytes 972908 pkt (dropped 0, overlimits 0 requeues 0) rate 83443Kbit 7990pps backlog 0b 0p requeues 0 lended: 58766 borrowed: 0 giants: 0 tokens: -49 ctokens: -49 class htb 1:17 parent 1:2 prio 3 rate 5000Kbit ceil 10000Kbit burst 1600b cburst 1600b Sent 15665 bytes 28 pkt (dropped 0, overlimits 0 requeues 0) rate 48bit 0pps backlog 0b 0p requeues 0 lended: 28 borrowed: 0 giants: 0 tokens: 38813 ctokens: 19407 ### tun0: queueing disciplines qdisc pfifo_fast 0: root refcnt 2 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 983884 bytes 1408 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0 -- Oguz YILMAZ -- 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
