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Date: Mon, 07 Sep 2009 15:00:20 +0200 From: Eric Dumazet <eric.dumazet@...il.com> To: David Miller <davem@...emloft.net> CC: kaber@...sh.net, netdev@...r.kernel.org Subject: Re: net_sched 00/07: classful multiqueue dummy scheduler David Miller a écrit : > I gave these patches a very basic bashing with NIU, and it > seems to work from what I've tried. > > I know that Jarek has expressed some questions about the callback > scheme used by the new mq classful qdisc, as well as some other > issues, but we can refine this using followon patches. > > For now I'm pushing this out so that it gets wider testing. > > Thanks everyone! Very interesting :) Had very litle time to test this, but got problems very fast, if rate estimator configured. (Here, eth2 maps to tg3, that uses a num_tx_queues of 5, even on non multiqueue device) So its real_num_tx_queues is 1, but we can play with tc and mq # tc qdisc replace dev eth2 handle 1: root estimator 1sec 8sec mq # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 62414 bytes 401 pkt (dropped 0, overlimits 0 requeues 0) rate 5456bit 4pps backlog 0b 0p requeues 0 # tc qdisc replace dev eth2 parent 1:1 estimator 1sec 8sec pfifo # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 12984 bytes 88 pkt (dropped 0, overlimits 0 requeues 0) rate 4368bit 4pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 12984 bytes 88 pkt (dropped 0, overlimits 0 requeues 0) rate 9624bit 8pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 36781 bytes 244 pkt (dropped 0, overlimits 0 requeues 0) rate 34360Mbit 205872pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 36781 bytes 244 pkt (dropped 0, overlimits 0 requeues 0) rate 19824bit 16pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 52663 bytes 348 pkt (dropped 0, overlimits 0 requeues 0) rate 17457Mbit 105605pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 52663 bytes 348 pkt (dropped 0, overlimits 0 requeues 0) rate 22560bit 19pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 71775 bytes 473 pkt (dropped 0, overlimits 0 requeues 0) rate 11838Mbit 47402pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 71775 bytes 473 pkt (dropped 0, overlimits 0 requeues 0) rate 23880bit 20pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 94755 bytes 623 pkt (dropped 0, overlimits 0 requeues 0) rate 3562Mbit 18621pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 94755 bytes 623 pkt (dropped 0, overlimits 0 requeues 0) rate 24440bit 20pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 112501 bytes 741 pkt (dropped 0, overlimits 0 requeues 0) rate 734270Kbit 9562pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 112501 bytes 741 pkt (dropped 0, overlimits 0 requeues 0) rate 24632bit 20pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 127137 bytes 836 pkt (dropped 0, overlimits 0 requeues 0) rate 25390Mbit 4913pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 127137 bytes 836 pkt (dropped 0, overlimits 0 requeues 0) rate 24960bit 21pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 150745 bytes 992 pkt (dropped 0, overlimits 0 requeues 0) rate 6212Mbit 1693pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 150745 bytes 992 pkt (dropped 0, overlimits 0 requeues 0) rate 25032bit 21pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 174008 bytes 1144 pkt (dropped 0, overlimits 0 requeues 0) rate 29377Mbit 674pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 174008 bytes 1144 pkt (dropped 0, overlimits 0 requeues 0) rate 24904bit 21pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 185976 bytes 1224 pkt (dropped 0, overlimits 0 requeues 0) rate 13093Mbit 408pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 185976 bytes 1224 pkt (dropped 0, overlimits 0 requeues 0) rate 25288bit 21pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 232272 bytes 1530 pkt (dropped 0, overlimits 0 requeues 0) rate 5196Mbit 57pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 232272 bytes 1530 pkt (dropped 0, overlimits 0 requeues 0) rate 24784bit 21pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 300071 bytes 1977 pkt (dropped 0, overlimits 0 requeues 0) rate 8988Mbit 6pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 300071 bytes 1977 pkt (dropped 0, overlimits 0 requeues 0) rate 24432bit 20pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 377495 bytes 2490 pkt (dropped 0, overlimits 0 requeues 0) rate 20429Mbit 2pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 377495 bytes 2490 pkt (dropped 0, overlimits 0 requeues 0) rate 24520bit 21pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 448070 bytes 2958 pkt (dropped 0, overlimits 0 requeues 0) rate 5726Mbit 4pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 448070 bytes 2958 pkt (dropped 0, overlimits 0 requeues 0) rate 24576bit 20pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 519926 bytes 3435 pkt (dropped 0, overlimits 0 requeues 0) rate 265505Kbit 3pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 519926 bytes 3435 pkt (dropped 0, overlimits 0 requeues 0) rate 24920bit 21pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 522242 bytes 3449 pkt (dropped 0, overlimits 0 requeues 0) rate 232389Kbit 62pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 522242 bytes 3449 pkt (dropped 0, overlimits 0 requeues 0) rate 25304bit 21pps backlog 0b 0p requeues 0 # tc -s -d qdisc show dev eth2 qdisc mq 1: root Sent 528702 bytes 3491 pkt (dropped 0, overlimits 0 requeues 0) rate 177925Kbit 49pps backlog 0b 0p requeues 0 qdisc pfifo 8001: parent 1:1 limit 1000p Sent 528702 bytes 3491 pkt (dropped 0, overlimits 0 requeues 0) rate 25400bit 21pps backlog 0b 0p requeues 0 <<<crash>>> (On another term I had a "ping -i 0.1 192.168.20.120" that gave : 2009/08/07 14:53:42.498 64 bytes from 192.168.20.120: icmp_seq=1982 ttl=64 time=0.126 ms 2009/08/07 14:53:42.598 64 bytes from 192.168.20.120: icmp_seq=1983 ttl=64 time=0.118 ms 2009/08/07 14:53:42.698 64 bytes from 192.168.20.120: icmp_seq=1984 ttl=64 time=0.114 ms 2009/08/07 14:53:42.798 64 bytes from 192.168.20.120: icmp_seq=1985 ttl=64 time=0.123 ms 2009/08/07 14:53:42.898 64 bytes from 192.168.20.120: icmp_seq=1986 ttl=64 time=0.126 ms 2009/08/07 14:53:42.998 64 bytes from 192.168.20.120: icmp_seq=1987 ttl=64 time=0.119 ms 2009/08/07 14:53:43.098 64 bytes from 192.168.20.120: icmp_seq=1988 ttl=64 time=0.122 ms 2009/08/07 14:53:43.198 64 bytes from 192.168.20.120: icmp_seq=1989 ttl=64 time=0.119 ms 2009/08/07 14:53:43.298 64 bytes from 192.168.20.120: icmp_seq=1990 ttl=64 time=0.117 ms 2009/08/07 14:53:43.398 64 bytes from 192.168.20.120: icmp_seq=1991 ttl=64 time=0.117 ms ping: sendmsg: No buffer space available -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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