* [PATCH 0/5] tracing/events: add tracepoint to TCP/IP stack and netdev layer
@ 2010-01-18 8:26 Koki Sanagi
2010-01-19 7:15 ` Yang Hongyang
2010-01-20 1:41 ` Yang Hongyang
0 siblings, 2 replies; 6+ messages in thread
From: Koki Sanagi @ 2010-01-18 8:26 UTC (permalink / raw)
To: netdev, davem, nhorman; +Cc: izumi.taku, kaneshige.kenji
These patch-set adds some tracepoints to the TCP/IP stack and netdev layer.
As described below,
http://marc.info/?l=linux-netdev&m=126096487212459&w=2
dev_hard_start_xmit and netif_receive_skb are important location to add
tracepoints. Because driver depends on an machine environment, we usually
check this point when solving network problem. But these two points are lack of
infrotmation that what packets are passed, So I add other tracepoints to know
what packets are passed and to give some merits.
Added tracepoints are at transmit/receive entry of TCP, UDP, RAW, IPv4, driver
and Qdisc. And tracepoints to output information to make connection
between these entry tracepoints are also added.
These tracepoints give some merits.
For example, they enable us to measure packet latency.
By using tcpdump, we can analyze what packets are passed, but we cannot analyze
how long it takes to pass through network layer(In other words, latency of TCP
layer, IP layer and Qdisc).
Packet latency is very useful information to solve a network bad performance or
bad reaction network application, packet latency is very useful information.
As an other use case, unlike a tcpdump, they are recorded in ftrace buffer
without IO burden. Only when you need, output recorded information.
I mean, they are fit to run always.
Details of added tracepoint are below.
skb_clone chase the cloned skb
senddata_copy_skb copy userdata to skb for transmit
netdev_start_xmit entry of driver's transmit function.
netdev_receive_skb entry of netstack(receive).
dev_queue_xmit entry of Qdisc.
ip_queue_xmit entry of IP layer(TCP transmit)
ip_push_pending_frames entry of IP layer(UDP transmit)
ip_output entry of IP layer(RAW transmit)
ip_frag_queue aggregate fragmented packet
ip_frag_reasm reasemble fragmented packet
ip_rcv entry of IP layer(receive)
tcp_sendmsg entry of TCP layer(transmit)
tcp_sendpage entry of TCP layer(transmit)
tcp_push_pending_frames all data(tcp_sendmsg have) have copied to skb
tcp_v4_rcv entry of TCP layer(receive)
udp_sendmsg entry of UDP layer(transmit)
udp_sendpage entry of UDP layer(transmit)
udp_push_pending_frames all data(udp_sendmsg have) have copied to skb
udp_rcv entry of UDP layer(receive).
raw_sendmsg entry of RAW layer(transmit).
raw_rcv entry of RAW layer(receive).
Outputs are below.
TCP send
netperf-2513 [000] 2603.586818: tcp_sendmsg: sk=f644eac0 len=5000
netperf-2513 [000] 2603.586818: senddata_copy_skb: sk=f644eac0 skbaddr=f7159800 len=1416
netperf-2513 [000] 2603.586820: senddata_copy_skb: sk=f644eac0 skbaddr=f7159500 len=1448
netperf-2513 [000] 2603.586821: senddata_copy_skb: sk=f644eac0 skbaddr=f7158d80 len=1448
netperf-2513 [000] 2603.586822: senddata_copy_skb: sk=f644eac0 skbaddr=f7159c80 len=688
netperf-2513 [000] 2603.586822: tcp_push_pending_frames: sk=f644eac0 sport=54875 dport=51707
tail-2514 [001] 2603.587577: skb_clone: original=f7159800 clone=f71598b4
tail-2514 [001] 2603.587578: ip_queue_xmit: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
tail-2514 [001] 2603.587579: ip_output: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
tail-2514 [001] 2603.587579: dev_queue_xmit: dev=eth10 skbaddr=f71598b4 len=1514
tail-2514 [001] 2603.587580: netdev_start_xmit: dev=eth10 skbaddr=f71598b4 len=1514
tail-2514 [001] 2603.587628: skb_clone: original=f7159500 clone=f71595b4
tail-2514 [001] 2603.587629: ip_queue_xmit: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
tail-2514 [001] 2603.587630: ip_output: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
tail-2514 [001] 2603.587631: dev_queue_xmit: dev=eth10 skbaddr=f71595b4 len=1514
tail-2514 [001] 2603.587632: netdev_start_xmit: dev=eth10 skbaddr=f71595b4 len=1514
tail-2514 [001] 2603.587632: skb_clone: original=f7158d80 clone=f7158e34
tail-2514 [001] 2603.587633: ip_queue_xmit: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
tail-2514 [001] 2603.587634: ip_output: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
tail-2514 [001] 2603.587635: dev_queue_xmit: dev=eth10 skbaddr=f7158e34 len=1514
tail-2514 [001] 2603.587635: netdev_start_xmit: dev=eth10 skbaddr=f7158e34 len=1514
tail-2514 [001] 2603.587685: skb_clone: original=f7159c80 clone=f7159d34
tail-2514 [001] 2603.587685: ip_queue_xmit: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
tail-2514 [001] 2603.587687: ip_output: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
tail-2514 [001] 2603.587687: dev_queue_xmit: dev=eth10 skbaddr=f7159d34 len=1514
tail-2514 [001] 2603.587688: netdev_start_xmit: dev=eth10 skbaddr=f7159d34 len=1514
TCP recv
<idle>-0 [001] 3499.386601: netdev_receive_skb: dev=eth10 skbaddr=f4a88480 len=1500
<idle>-0 [001] 3499.386602: ip_rcv: skbaddr=f4a88480 saddr=192.168.100.2 daddr=192.168.100.5
<idle>-0 [001] 3499.386604: tcp_v4_rcv: skbaddr=f4a88480 sport=51035 dport=34474
<idle>-0 [000] 3499.386619: netdev_receive_skb: dev=eth10 skbaddr=f3c75300 len=1500
<idle>-0 [000] 3499.386619: ip_rcv: skbaddr=f3c75300 saddr=192.168.100.2 daddr=192.168.100.5
<idle>-0 [000] 3499.386622: tcp_v4_rcv: skbaddr=f3c75300 sport=51035 dport=34474
netserver-2519 [000] 3499.386626: skb_copy_datagram_iovec: skbaddr=f4a88480 len=1448
netserver-2519 [000] 3499.386628: skb_copy_datagram_iovec: skbaddr=f3c75300 len=1448
UDP send
netperf-2506 [001] 2309.073460: udp_sendmsg: sk=f662e6c0 len=5000
netperf-2506 [001] 2309.073466: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65780 len=1472
netperf-2506 [001] 2309.073467: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65000 len=1480
netperf-2506 [001] 2309.073468: senddata_copy_skb: sk=f662e6c0 skbaddr=f3decf00 len=1480
netperf-2506 [001] 2309.073469: senddata_copy_skb: sk=f662e6c0 skbaddr=f4802840 len=568
netperf-2506 [001] 2309.073470: udp_push_pending_frames: sk=f662e6c0 sport=42679 dport=47640
netperf-2506 [001] 2309.073470: ip_push_pending_frames: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
netperf-2506 [001] 2309.073471: ip_output: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
netperf-2506 [001] 2309.073472: dev_queue_xmit: dev=eth10 skbaddr=f5f65780 len=1514
netperf-2506 [001] 2309.073473: dev_queue_xmit: dev=eth10 skbaddr=f5f65000 len=1514
netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f3decf00 len=1514
netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f4802840 len=602
<idle>-0 [001] 2309.073615: netdev_start_xmit: dev=eth10 skbaddr=f5f65780 len=1514
<idle>-0 [001] 2309.073616: netdev_start_xmit: dev=eth10 skbaddr=f5f65000 len=1514
<idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f3decf00 len=1514
<idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f4802840 len=602
UDP recv
<idle>-0 [001] 3671.663678: netdev_receive_skb: dev=eth10 skbaddr=f5f72d80 len=1500
<idle>-0 [001] 3671.663678: ip_rcv: skbaddr=f5f72d80 saddr=192.168.100.2 daddr=192.168.100.5
<idle>-0 [001] 3671.663680: ip_frag_queue: skbaddr=f5f72d80 prev=(null)
<idle>-0 [001] 3671.663681: netdev_receive_skb: dev=eth10 skbaddr=f5f6aa80 len=1500
<idle>-0 [001] 3671.663681: ip_rcv: skbaddr=f5f6aa80 saddr=192.168.100.2 daddr=192.168.100.5
<idle>-0 [001] 3671.663681: ip_frag_queue: skbaddr=f5f6aa80 prev=f5f72d80
<idle>-0 [000] 3671.663702: netdev_receive_skb: dev=eth10 skbaddr=f4800840 len=1500
<idle>-0 [000] 3671.663703: ip_rcv: skbaddr=f4800840 saddr=192.168.100.2 daddr=192.168.100.5
<idle>-0 [000] 3671.663703: ip_frag_queue: skbaddr=f4800840 prev=f5f6aa80
<idle>-0 [000] 3671.663704: netdev_receive_skb: dev=eth10 skbaddr=f4a88b40 len=588
<idle>-0 [000] 3671.663705: ip_rcv: skbaddr=f4a88b40 saddr=192.168.100.2 daddr=192.168.100.5
<idle>-0 [000] 3671.663705: ip_frag_queue: skbaddr=f4a88b40 prev=f4800840
<idle>-0 [000] 3671.663706: skb_clone: original=f4a88b40 clone=f5fff480
<idle>-0 [000] 3671.663707: kfree_skb: skbaddr=f5f72d80 protocol=2048 location=c0715f1a
<idle>-0 [000] 3671.663707: ip_frag_reasm: head=f4a88b40 len=1480
<idle>-0 [000] 3671.663711: udp_rcv: skbaddr=f4a88b40 sport=57915 dport=37634
netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f4a88b40 len=5000
netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f5f6aa80 len=1480
netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f4800840 len=1480
netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f5fff480 len=568
RAW send
send-2431 [001] 1813.799957: raw_sendmsg: sk=f4a37200 len=1500
send-2431 [001] 1813.799959: senddata_copy_skb: sk=f4a37200 skbaddr=f3dec180 len=1500
send-2431 [001] 1813.799960: ip_output: skbaddr=f3dec180 saddr=192.168.100.5 daddr=192.168.100.2
send-2431 [001] 1813.799960: dev_queue_xmit: dev=eth10 skbaddr=f3dec180 len=1514
send-2431 [001] 1813.799961: netdev_start_xmit: dev=eth10 skbaddr=f3dec180 len=1514
RAW recv
<idle>-0 [000] 2052.858947: netdev_receive_skb: dev=eth1 skbaddr=f5f66000 len=1500
<idle>-0 [000] 2052.858947: ip_rcv: skbaddr=f5f66000 saddr=192.168.101.2 daddr=192.168.101.5
<idle>-0 [000] 2052.858951: skb_clone: original=f5f66000 clone=f3e43cc0
<idle>-0 [000] 2052.858952: raw_rcv: skbaddr=f3e43cc0 len=1476
recv-2499 [001] 2052.858970: skb_copy_datagram_iovec: skbaddr=f3e43cc0 len=1500
Best Regards,
Koki Sanagi <sanagi.koki@jp.fujitsu.com>
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH 0/5] tracing/events: add tracepoint to TCP/IP stack and netdev layer
2010-01-18 8:26 [PATCH 0/5] tracing/events: add tracepoint to TCP/IP stack and netdev layer Koki Sanagi
@ 2010-01-19 7:15 ` Yang Hongyang
2010-01-20 1:08 ` Koki Sanagi
2010-01-20 1:41 ` Yang Hongyang
1 sibling, 1 reply; 6+ messages in thread
From: Yang Hongyang @ 2010-01-19 7:15 UTC (permalink / raw)
To: Koki Sanagi; +Cc: netdev, davem, nhorman, izumi.taku, kaneshige.kenji
Koki Sanagi wrote:
> These patch-set adds some tracepoints to the TCP/IP stack and netdev layer.
Your patch-set is mainly for IPv4,I think you'd better mantion that in your
title.^!^
>
> As described below,
> http://marc.info/?l=linux-netdev&m=126096487212459&w=2
> dev_hard_start_xmit and netif_receive_skb are important location to add
> tracepoints. Because driver depends on an machine environment, we usually
> check this point when solving network problem. But these two points are lack of
> infrotmation that what packets are passed, So I add other tracepoints to know
> what packets are passed and to give some merits.
>
> Added tracepoints are at transmit/receive entry of TCP, UDP, RAW, IPv4, driver
> and Qdisc. And tracepoints to output information to make connection
> between these entry tracepoints are also added.
>
> These tracepoints give some merits.
> For example, they enable us to measure packet latency.
> By using tcpdump, we can analyze what packets are passed, but we cannot analyze
> how long it takes to pass through network layer(In other words, latency of TCP
> layer, IP layer and Qdisc).
> Packet latency is very useful information to solve a network bad performance or
> bad reaction network application, packet latency is very useful information.
>
> As an other use case, unlike a tcpdump, they are recorded in ftrace buffer
> without IO burden. Only when you need, output recorded information.
> I mean, they are fit to run always.
>
> Details of added tracepoint are below.
>
> skb_clone chase the cloned skb
> senddata_copy_skb copy userdata to skb for transmit
>
> netdev_start_xmit entry of driver's transmit function.
> netdev_receive_skb entry of netstack(receive).
> dev_queue_xmit entry of Qdisc.
>
> ip_queue_xmit entry of IP layer(TCP transmit)
> ip_push_pending_frames entry of IP layer(UDP transmit)
> ip_output entry of IP layer(RAW transmit)
> ip_frag_queue aggregate fragmented packet
> ip_frag_reasm reasemble fragmented packet
> ip_rcv entry of IP layer(receive)
>
> tcp_sendmsg entry of TCP layer(transmit)
> tcp_sendpage entry of TCP layer(transmit)
> tcp_push_pending_frames all data(tcp_sendmsg have) have copied to skb
> tcp_v4_rcv entry of TCP layer(receive)
>
> udp_sendmsg entry of UDP layer(transmit)
> udp_sendpage entry of UDP layer(transmit)
> udp_push_pending_frames all data(udp_sendmsg have) have copied to skb
> udp_rcv entry of UDP layer(receive).
>
> raw_sendmsg entry of RAW layer(transmit).
> raw_rcv entry of RAW layer(receive).
>
> Outputs are below.
>
> TCP send
> netperf-2513 [000] 2603.586818: tcp_sendmsg: sk=f644eac0 len=5000
> netperf-2513 [000] 2603.586818: senddata_copy_skb: sk=f644eac0 skbaddr=f7159800 len=1416
> netperf-2513 [000] 2603.586820: senddata_copy_skb: sk=f644eac0 skbaddr=f7159500 len=1448
> netperf-2513 [000] 2603.586821: senddata_copy_skb: sk=f644eac0 skbaddr=f7158d80 len=1448
> netperf-2513 [000] 2603.586822: senddata_copy_skb: sk=f644eac0 skbaddr=f7159c80 len=688
> netperf-2513 [000] 2603.586822: tcp_push_pending_frames: sk=f644eac0 sport=54875 dport=51707
> tail-2514 [001] 2603.587577: skb_clone: original=f7159800 clone=f71598b4
> tail-2514 [001] 2603.587578: ip_queue_xmit: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587579: ip_output: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587579: dev_queue_xmit: dev=eth10 skbaddr=f71598b4 len=1514
> tail-2514 [001] 2603.587580: netdev_start_xmit: dev=eth10 skbaddr=f71598b4 len=1514
> tail-2514 [001] 2603.587628: skb_clone: original=f7159500 clone=f71595b4
> tail-2514 [001] 2603.587629: ip_queue_xmit: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587630: ip_output: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587631: dev_queue_xmit: dev=eth10 skbaddr=f71595b4 len=1514
> tail-2514 [001] 2603.587632: netdev_start_xmit: dev=eth10 skbaddr=f71595b4 len=1514
> tail-2514 [001] 2603.587632: skb_clone: original=f7158d80 clone=f7158e34
> tail-2514 [001] 2603.587633: ip_queue_xmit: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587634: ip_output: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587635: dev_queue_xmit: dev=eth10 skbaddr=f7158e34 len=1514
> tail-2514 [001] 2603.587635: netdev_start_xmit: dev=eth10 skbaddr=f7158e34 len=1514
> tail-2514 [001] 2603.587685: skb_clone: original=f7159c80 clone=f7159d34
> tail-2514 [001] 2603.587685: ip_queue_xmit: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587687: ip_output: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587687: dev_queue_xmit: dev=eth10 skbaddr=f7159d34 len=1514
> tail-2514 [001] 2603.587688: netdev_start_xmit: dev=eth10 skbaddr=f7159d34 len=1514
>
> TCP recv
> <idle>-0 [001] 3499.386601: netdev_receive_skb: dev=eth10 skbaddr=f4a88480 len=1500
> <idle>-0 [001] 3499.386602: ip_rcv: skbaddr=f4a88480 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [001] 3499.386604: tcp_v4_rcv: skbaddr=f4a88480 sport=51035 dport=34474
> <idle>-0 [000] 3499.386619: netdev_receive_skb: dev=eth10 skbaddr=f3c75300 len=1500
> <idle>-0 [000] 3499.386619: ip_rcv: skbaddr=f3c75300 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [000] 3499.386622: tcp_v4_rcv: skbaddr=f3c75300 sport=51035 dport=34474
> netserver-2519 [000] 3499.386626: skb_copy_datagram_iovec: skbaddr=f4a88480 len=1448
> netserver-2519 [000] 3499.386628: skb_copy_datagram_iovec: skbaddr=f3c75300 len=1448
>
> UDP send
> netperf-2506 [001] 2309.073460: udp_sendmsg: sk=f662e6c0 len=5000
> netperf-2506 [001] 2309.073466: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65780 len=1472
> netperf-2506 [001] 2309.073467: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65000 len=1480
> netperf-2506 [001] 2309.073468: senddata_copy_skb: sk=f662e6c0 skbaddr=f3decf00 len=1480
> netperf-2506 [001] 2309.073469: senddata_copy_skb: sk=f662e6c0 skbaddr=f4802840 len=568
> netperf-2506 [001] 2309.073470: udp_push_pending_frames: sk=f662e6c0 sport=42679 dport=47640
> netperf-2506 [001] 2309.073470: ip_push_pending_frames: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
> netperf-2506 [001] 2309.073471: ip_output: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
> netperf-2506 [001] 2309.073472: dev_queue_xmit: dev=eth10 skbaddr=f5f65780 len=1514
> netperf-2506 [001] 2309.073473: dev_queue_xmit: dev=eth10 skbaddr=f5f65000 len=1514
> netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f3decf00 len=1514
> netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f4802840 len=602
> <idle>-0 [001] 2309.073615: netdev_start_xmit: dev=eth10 skbaddr=f5f65780 len=1514
> <idle>-0 [001] 2309.073616: netdev_start_xmit: dev=eth10 skbaddr=f5f65000 len=1514
> <idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f3decf00 len=1514
> <idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f4802840 len=602
>
> UDP recv
> <idle>-0 [001] 3671.663678: netdev_receive_skb: dev=eth10 skbaddr=f5f72d80 len=1500
> <idle>-0 [001] 3671.663678: ip_rcv: skbaddr=f5f72d80 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [001] 3671.663680: ip_frag_queue: skbaddr=f5f72d80 prev=(null)
> <idle>-0 [001] 3671.663681: netdev_receive_skb: dev=eth10 skbaddr=f5f6aa80 len=1500
> <idle>-0 [001] 3671.663681: ip_rcv: skbaddr=f5f6aa80 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [001] 3671.663681: ip_frag_queue: skbaddr=f5f6aa80 prev=f5f72d80
> <idle>-0 [000] 3671.663702: netdev_receive_skb: dev=eth10 skbaddr=f4800840 len=1500
> <idle>-0 [000] 3671.663703: ip_rcv: skbaddr=f4800840 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [000] 3671.663703: ip_frag_queue: skbaddr=f4800840 prev=f5f6aa80
> <idle>-0 [000] 3671.663704: netdev_receive_skb: dev=eth10 skbaddr=f4a88b40 len=588
> <idle>-0 [000] 3671.663705: ip_rcv: skbaddr=f4a88b40 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [000] 3671.663705: ip_frag_queue: skbaddr=f4a88b40 prev=f4800840
> <idle>-0 [000] 3671.663706: skb_clone: original=f4a88b40 clone=f5fff480
> <idle>-0 [000] 3671.663707: kfree_skb: skbaddr=f5f72d80 protocol=2048 location=c0715f1a
> <idle>-0 [000] 3671.663707: ip_frag_reasm: head=f4a88b40 len=1480
> <idle>-0 [000] 3671.663711: udp_rcv: skbaddr=f4a88b40 sport=57915 dport=37634
> netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f4a88b40 len=5000
> netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f5f6aa80 len=1480
> netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f4800840 len=1480
> netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f5fff480 len=568
>
> RAW send
> send-2431 [001] 1813.799957: raw_sendmsg: sk=f4a37200 len=1500
> send-2431 [001] 1813.799959: senddata_copy_skb: sk=f4a37200 skbaddr=f3dec180 len=1500
> send-2431 [001] 1813.799960: ip_output: skbaddr=f3dec180 saddr=192.168.100.5 daddr=192.168.100.2
> send-2431 [001] 1813.799960: dev_queue_xmit: dev=eth10 skbaddr=f3dec180 len=1514
> send-2431 [001] 1813.799961: netdev_start_xmit: dev=eth10 skbaddr=f3dec180 len=1514
>
> RAW recv
> <idle>-0 [000] 2052.858947: netdev_receive_skb: dev=eth1 skbaddr=f5f66000 len=1500
> <idle>-0 [000] 2052.858947: ip_rcv: skbaddr=f5f66000 saddr=192.168.101.2 daddr=192.168.101.5
> <idle>-0 [000] 2052.858951: skb_clone: original=f5f66000 clone=f3e43cc0
> <idle>-0 [000] 2052.858952: raw_rcv: skbaddr=f3e43cc0 len=1476
> recv-2499 [001] 2052.858970: skb_copy_datagram_iovec: skbaddr=f3e43cc0 len=1500
>
> Best Regards,
> Koki Sanagi <sanagi.koki@jp.fujitsu.com>
>
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
>
--
Regards
Yang Hongyang
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 0/5] tracing/events: add tracepoint to TCP/IP stack and netdev layer
2010-01-19 7:15 ` Yang Hongyang
@ 2010-01-20 1:08 ` Koki Sanagi
2010-01-20 1:52 ` Yang Hongyang
0 siblings, 1 reply; 6+ messages in thread
From: Koki Sanagi @ 2010-01-20 1:08 UTC (permalink / raw)
To: Yang Hongyang; +Cc: netdev, davem, nhorman, izumi.taku, kaneshige.kenji
Thanks for your reply.
(2010/01/19 16:15), Yang Hongyang wrote:
> Koki Sanagi wrote:
>> These patch-set adds some tracepoints to the TCP/IP stack and netdev layer.
>
> Your patch-set is mainly for IPv4,I think you'd better mantion that in your
> title.^!^
>
Yeah, you're right.
I'll change the title next time.
Best regards,
Koki Sanagi
>>
>> As described below,
>> http://marc.info/?l=linux-netdev&m=126096487212459&w=2
>> dev_hard_start_xmit and netif_receive_skb are important location to add
>> tracepoints. Because driver depends on an machine environment, we usually
>> check this point when solving network problem. But these two points are lack of
>> infrotmation that what packets are passed, So I add other tracepoints to know
>> what packets are passed and to give some merits.
>>
>> Added tracepoints are at transmit/receive entry of TCP, UDP, RAW, IPv4, driver
>> and Qdisc. And tracepoints to output information to make connection
>> between these entry tracepoints are also added.
>>
>> These tracepoints give some merits.
>> For example, they enable us to measure packet latency.
>> By using tcpdump, we can analyze what packets are passed, but we cannot analyze
>> how long it takes to pass through network layer(In other words, latency of TCP
>> layer, IP layer and Qdisc).
>> Packet latency is very useful information to solve a network bad performance or
>> bad reaction network application, packet latency is very useful information.
>>
>> As an other use case, unlike a tcpdump, they are recorded in ftrace buffer
>> without IO burden. Only when you need, output recorded information.
>> I mean, they are fit to run always.
>>
>> Details of added tracepoint are below.
>>
>> skb_clone chase the cloned skb
>> senddata_copy_skb copy userdata to skb for transmit
>>
>> netdev_start_xmit entry of driver's transmit function.
>> netdev_receive_skb entry of netstack(receive).
>> dev_queue_xmit entry of Qdisc.
>>
>> ip_queue_xmit entry of IP layer(TCP transmit)
>> ip_push_pending_frames entry of IP layer(UDP transmit)
>> ip_output entry of IP layer(RAW transmit)
>> ip_frag_queue aggregate fragmented packet
>> ip_frag_reasm reasemble fragmented packet
>> ip_rcv entry of IP layer(receive)
>>
>> tcp_sendmsg entry of TCP layer(transmit)
>> tcp_sendpage entry of TCP layer(transmit)
>> tcp_push_pending_frames all data(tcp_sendmsg have) have copied to skb
>> tcp_v4_rcv entry of TCP layer(receive)
>>
>> udp_sendmsg entry of UDP layer(transmit)
>> udp_sendpage entry of UDP layer(transmit)
>> udp_push_pending_frames all data(udp_sendmsg have) have copied to skb
>> udp_rcv entry of UDP layer(receive).
>>
>> raw_sendmsg entry of RAW layer(transmit).
>> raw_rcv entry of RAW layer(receive).
>>
>> Outputs are below.
>>
>> TCP send
>> netperf-2513 [000] 2603.586818: tcp_sendmsg: sk=f644eac0 len=5000
>> netperf-2513 [000] 2603.586818: senddata_copy_skb: sk=f644eac0 skbaddr=f7159800 len=1416
>> netperf-2513 [000] 2603.586820: senddata_copy_skb: sk=f644eac0 skbaddr=f7159500 len=1448
>> netperf-2513 [000] 2603.586821: senddata_copy_skb: sk=f644eac0 skbaddr=f7158d80 len=1448
>> netperf-2513 [000] 2603.586822: senddata_copy_skb: sk=f644eac0 skbaddr=f7159c80 len=688
>> netperf-2513 [000] 2603.586822: tcp_push_pending_frames: sk=f644eac0 sport=54875 dport=51707
>> tail-2514 [001] 2603.587577: skb_clone: original=f7159800 clone=f71598b4
>> tail-2514 [001] 2603.587578: ip_queue_xmit: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587579: ip_output: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587579: dev_queue_xmit: dev=eth10 skbaddr=f71598b4 len=1514
>> tail-2514 [001] 2603.587580: netdev_start_xmit: dev=eth10 skbaddr=f71598b4 len=1514
>> tail-2514 [001] 2603.587628: skb_clone: original=f7159500 clone=f71595b4
>> tail-2514 [001] 2603.587629: ip_queue_xmit: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587630: ip_output: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587631: dev_queue_xmit: dev=eth10 skbaddr=f71595b4 len=1514
>> tail-2514 [001] 2603.587632: netdev_start_xmit: dev=eth10 skbaddr=f71595b4 len=1514
>> tail-2514 [001] 2603.587632: skb_clone: original=f7158d80 clone=f7158e34
>> tail-2514 [001] 2603.587633: ip_queue_xmit: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587634: ip_output: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587635: dev_queue_xmit: dev=eth10 skbaddr=f7158e34 len=1514
>> tail-2514 [001] 2603.587635: netdev_start_xmit: dev=eth10 skbaddr=f7158e34 len=1514
>> tail-2514 [001] 2603.587685: skb_clone: original=f7159c80 clone=f7159d34
>> tail-2514 [001] 2603.587685: ip_queue_xmit: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587687: ip_output: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587687: dev_queue_xmit: dev=eth10 skbaddr=f7159d34 len=1514
>> tail-2514 [001] 2603.587688: netdev_start_xmit: dev=eth10 skbaddr=f7159d34 len=1514
>>
>> TCP recv
>> <idle>-0 [001] 3499.386601: netdev_receive_skb: dev=eth10 skbaddr=f4a88480 len=1500
>> <idle>-0 [001] 3499.386602: ip_rcv: skbaddr=f4a88480 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [001] 3499.386604: tcp_v4_rcv: skbaddr=f4a88480 sport=51035 dport=34474
>> <idle>-0 [000] 3499.386619: netdev_receive_skb: dev=eth10 skbaddr=f3c75300 len=1500
>> <idle>-0 [000] 3499.386619: ip_rcv: skbaddr=f3c75300 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [000] 3499.386622: tcp_v4_rcv: skbaddr=f3c75300 sport=51035 dport=34474
>> netserver-2519 [000] 3499.386626: skb_copy_datagram_iovec: skbaddr=f4a88480 len=1448
>> netserver-2519 [000] 3499.386628: skb_copy_datagram_iovec: skbaddr=f3c75300 len=1448
>>
>> UDP send
>> netperf-2506 [001] 2309.073460: udp_sendmsg: sk=f662e6c0 len=5000
>> netperf-2506 [001] 2309.073466: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65780 len=1472
>> netperf-2506 [001] 2309.073467: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65000 len=1480
>> netperf-2506 [001] 2309.073468: senddata_copy_skb: sk=f662e6c0 skbaddr=f3decf00 len=1480
>> netperf-2506 [001] 2309.073469: senddata_copy_skb: sk=f662e6c0 skbaddr=f4802840 len=568
>> netperf-2506 [001] 2309.073470: udp_push_pending_frames: sk=f662e6c0 sport=42679 dport=47640
>> netperf-2506 [001] 2309.073470: ip_push_pending_frames: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
>> netperf-2506 [001] 2309.073471: ip_output: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
>> netperf-2506 [001] 2309.073472: dev_queue_xmit: dev=eth10 skbaddr=f5f65780 len=1514
>> netperf-2506 [001] 2309.073473: dev_queue_xmit: dev=eth10 skbaddr=f5f65000 len=1514
>> netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f3decf00 len=1514
>> netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f4802840 len=602
>> <idle>-0 [001] 2309.073615: netdev_start_xmit: dev=eth10 skbaddr=f5f65780 len=1514
>> <idle>-0 [001] 2309.073616: netdev_start_xmit: dev=eth10 skbaddr=f5f65000 len=1514
>> <idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f3decf00 len=1514
>> <idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f4802840 len=602
>>
>> UDP recv
>> <idle>-0 [001] 3671.663678: netdev_receive_skb: dev=eth10 skbaddr=f5f72d80 len=1500
>> <idle>-0 [001] 3671.663678: ip_rcv: skbaddr=f5f72d80 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [001] 3671.663680: ip_frag_queue: skbaddr=f5f72d80 prev=(null)
>> <idle>-0 [001] 3671.663681: netdev_receive_skb: dev=eth10 skbaddr=f5f6aa80 len=1500
>> <idle>-0 [001] 3671.663681: ip_rcv: skbaddr=f5f6aa80 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [001] 3671.663681: ip_frag_queue: skbaddr=f5f6aa80 prev=f5f72d80
>> <idle>-0 [000] 3671.663702: netdev_receive_skb: dev=eth10 skbaddr=f4800840 len=1500
>> <idle>-0 [000] 3671.663703: ip_rcv: skbaddr=f4800840 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [000] 3671.663703: ip_frag_queue: skbaddr=f4800840 prev=f5f6aa80
>> <idle>-0 [000] 3671.663704: netdev_receive_skb: dev=eth10 skbaddr=f4a88b40 len=588
>> <idle>-0 [000] 3671.663705: ip_rcv: skbaddr=f4a88b40 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [000] 3671.663705: ip_frag_queue: skbaddr=f4a88b40 prev=f4800840
>> <idle>-0 [000] 3671.663706: skb_clone: original=f4a88b40 clone=f5fff480
>> <idle>-0 [000] 3671.663707: kfree_skb: skbaddr=f5f72d80 protocol=2048 location=c0715f1a
>> <idle>-0 [000] 3671.663707: ip_frag_reasm: head=f4a88b40 len=1480
>> <idle>-0 [000] 3671.663711: udp_rcv: skbaddr=f4a88b40 sport=57915 dport=37634
>> netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f4a88b40 len=5000
>> netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f5f6aa80 len=1480
>> netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f4800840 len=1480
>> netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f5fff480 len=568
>>
>> RAW send
>> send-2431 [001] 1813.799957: raw_sendmsg: sk=f4a37200 len=1500
>> send-2431 [001] 1813.799959: senddata_copy_skb: sk=f4a37200 skbaddr=f3dec180 len=1500
>> send-2431 [001] 1813.799960: ip_output: skbaddr=f3dec180 saddr=192.168.100.5 daddr=192.168.100.2
>> send-2431 [001] 1813.799960: dev_queue_xmit: dev=eth10 skbaddr=f3dec180 len=1514
>> send-2431 [001] 1813.799961: netdev_start_xmit: dev=eth10 skbaddr=f3dec180 len=1514
>>
>> RAW recv
>> <idle>-0 [000] 2052.858947: netdev_receive_skb: dev=eth1 skbaddr=f5f66000 len=1500
>> <idle>-0 [000] 2052.858947: ip_rcv: skbaddr=f5f66000 saddr=192.168.101.2 daddr=192.168.101.5
>> <idle>-0 [000] 2052.858951: skb_clone: original=f5f66000 clone=f3e43cc0
>> <idle>-0 [000] 2052.858952: raw_rcv: skbaddr=f3e43cc0 len=1476
>> recv-2499 [001] 2052.858970: skb_copy_datagram_iovec: skbaddr=f3e43cc0 len=1500
>>
>> Best Regards,
>> Koki Sanagi<sanagi.koki@jp.fujitsu.com>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe netdev" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
>>
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 0/5] tracing/events: add tracepoint to TCP/IP stack and netdev layer
2010-01-20 1:08 ` Koki Sanagi
@ 2010-01-20 1:52 ` Yang Hongyang
0 siblings, 0 replies; 6+ messages in thread
From: Yang Hongyang @ 2010-01-20 1:52 UTC (permalink / raw)
To: Koki Sanagi; +Cc: netdev, davem, nhorman, izumi.taku, kaneshige.kenji
Koki Sanagi wrote:
> Thanks for your reply.
>
> (2010/01/19 16:15), Yang Hongyang wrote:
>> Koki Sanagi wrote:
>>> These patch-set adds some tracepoints to the TCP/IP stack and netdev layer.
>> Your patch-set is mainly for IPv4,I think you'd better mantion that in your
>> title.^!^
>>
> Yeah, you're right.
> I'll change the title next time.
Next time, all your mails that you send out to the maillist should using
UTF-8 encoding.
>
> Best regards,
> Koki Sanagi
>
>>> As described below,
>>> http://marc.info/?l=linux-netdev&m=126096487212459&w=2
>>> dev_hard_start_xmit and netif_receive_skb are important location to add
>>> tracepoints. Because driver depends on an machine environment, we usually
>>> check this point when solving network problem. But these two points are lack of
>>> infrotmation that what packets are passed, So I add other tracepoints to know
>>> what packets are passed and to give some merits.
>>>
>>> Added tracepoints are at transmit/receive entry of TCP, UDP, RAW, IPv4, driver
>>> and Qdisc. And tracepoints to output information to make connection
>>> between these entry tracepoints are also added.
>>>
>>> These tracepoints give some merits.
>>> For example, they enable us to measure packet latency.
>>> By using tcpdump, we can analyze what packets are passed, but we cannot analyze
>>> how long it takes to pass through network layer(In other words, latency of TCP
>>> layer, IP layer and Qdisc).
>>> Packet latency is very useful information to solve a network bad performance or
>>> bad reaction network application, packet latency is very useful information.
>>>
>>> As an other use case, unlike a tcpdump, they are recorded in ftrace buffer
>>> without IO burden. Only when you need, output recorded information.
>>> I mean, they are fit to run always.
>>>
>>> Details of added tracepoint are below.
>>>
>>> skb_clone chase the cloned skb
>>> senddata_copy_skb copy userdata to skb for transmit
>>>
>>> netdev_start_xmit entry of driver's transmit function.
>>> netdev_receive_skb entry of netstack(receive).
>>> dev_queue_xmit entry of Qdisc.
>>>
>>> ip_queue_xmit entry of IP layer(TCP transmit)
>>> ip_push_pending_frames entry of IP layer(UDP transmit)
>>> ip_output entry of IP layer(RAW transmit)
>>> ip_frag_queue aggregate fragmented packet
>>> ip_frag_reasm reasemble fragmented packet
>>> ip_rcv entry of IP layer(receive)
>>>
>>> tcp_sendmsg entry of TCP layer(transmit)
>>> tcp_sendpage entry of TCP layer(transmit)
>>> tcp_push_pending_frames all data(tcp_sendmsg have) have copied to skb
>>> tcp_v4_rcv entry of TCP layer(receive)
>>>
>>> udp_sendmsg entry of UDP layer(transmit)
>>> udp_sendpage entry of UDP layer(transmit)
>>> udp_push_pending_frames all data(udp_sendmsg have) have copied to skb
>>> udp_rcv entry of UDP layer(receive).
>>>
>>> raw_sendmsg entry of RAW layer(transmit).
>>> raw_rcv entry of RAW layer(receive).
>>>
>>> Outputs are below.
>>>
>>> TCP send
>>> netperf-2513 [000] 2603.586818: tcp_sendmsg: sk=f644eac0 len=5000
>>> netperf-2513 [000] 2603.586818: senddata_copy_skb: sk=f644eac0 skbaddr=f7159800 len=1416
>>> netperf-2513 [000] 2603.586820: senddata_copy_skb: sk=f644eac0 skbaddr=f7159500 len=1448
>>> netperf-2513 [000] 2603.586821: senddata_copy_skb: sk=f644eac0 skbaddr=f7158d80 len=1448
>>> netperf-2513 [000] 2603.586822: senddata_copy_skb: sk=f644eac0 skbaddr=f7159c80 len=688
>>> netperf-2513 [000] 2603.586822: tcp_push_pending_frames: sk=f644eac0 sport=54875 dport=51707
>>> tail-2514 [001] 2603.587577: skb_clone: original=f7159800 clone=f71598b4
>>> tail-2514 [001] 2603.587578: ip_queue_xmit: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
>>> tail-2514 [001] 2603.587579: ip_output: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
>>> tail-2514 [001] 2603.587579: dev_queue_xmit: dev=eth10 skbaddr=f71598b4 len=1514
>>> tail-2514 [001] 2603.587580: netdev_start_xmit: dev=eth10 skbaddr=f71598b4 len=1514
>>> tail-2514 [001] 2603.587628: skb_clone: original=f7159500 clone=f71595b4
>>> tail-2514 [001] 2603.587629: ip_queue_xmit: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
>>> tail-2514 [001] 2603.587630: ip_output: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
>>> tail-2514 [001] 2603.587631: dev_queue_xmit: dev=eth10 skbaddr=f71595b4 len=1514
>>> tail-2514 [001] 2603.587632: netdev_start_xmit: dev=eth10 skbaddr=f71595b4 len=1514
>>> tail-2514 [001] 2603.587632: skb_clone: original=f7158d80 clone=f7158e34
>>> tail-2514 [001] 2603.587633: ip_queue_xmit: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
>>> tail-2514 [001] 2603.587634: ip_output: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
>>> tail-2514 [001] 2603.587635: dev_queue_xmit: dev=eth10 skbaddr=f7158e34 len=1514
>>> tail-2514 [001] 2603.587635: netdev_start_xmit: dev=eth10 skbaddr=f7158e34 len=1514
>>> tail-2514 [001] 2603.587685: skb_clone: original=f7159c80 clone=f7159d34
>>> tail-2514 [001] 2603.587685: ip_queue_xmit: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
>>> tail-2514 [001] 2603.587687: ip_output: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
>>> tail-2514 [001] 2603.587687: dev_queue_xmit: dev=eth10 skbaddr=f7159d34 len=1514
>>> tail-2514 [001] 2603.587688: netdev_start_xmit: dev=eth10 skbaddr=f7159d34 len=1514
>>>
>>> TCP recv
>>> <idle>-0 [001] 3499.386601: netdev_receive_skb: dev=eth10 skbaddr=f4a88480 len=1500
>>> <idle>-0 [001] 3499.386602: ip_rcv: skbaddr=f4a88480 saddr=192.168.100.2 daddr=192.168.100.5
>>> <idle>-0 [001] 3499.386604: tcp_v4_rcv: skbaddr=f4a88480 sport=51035 dport=34474
>>> <idle>-0 [000] 3499.386619: netdev_receive_skb: dev=eth10 skbaddr=f3c75300 len=1500
>>> <idle>-0 [000] 3499.386619: ip_rcv: skbaddr=f3c75300 saddr=192.168.100.2 daddr=192.168.100.5
>>> <idle>-0 [000] 3499.386622: tcp_v4_rcv: skbaddr=f3c75300 sport=51035 dport=34474
>>> netserver-2519 [000] 3499.386626: skb_copy_datagram_iovec: skbaddr=f4a88480 len=1448
>>> netserver-2519 [000] 3499.386628: skb_copy_datagram_iovec: skbaddr=f3c75300 len=1448
>>>
>>> UDP send
>>> netperf-2506 [001] 2309.073460: udp_sendmsg: sk=f662e6c0 len=5000
>>> netperf-2506 [001] 2309.073466: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65780 len=1472
>>> netperf-2506 [001] 2309.073467: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65000 len=1480
>>> netperf-2506 [001] 2309.073468: senddata_copy_skb: sk=f662e6c0 skbaddr=f3decf00 len=1480
>>> netperf-2506 [001] 2309.073469: senddata_copy_skb: sk=f662e6c0 skbaddr=f4802840 len=568
>>> netperf-2506 [001] 2309.073470: udp_push_pending_frames: sk=f662e6c0 sport=42679 dport=47640
>>> netperf-2506 [001] 2309.073470: ip_push_pending_frames: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
>>> netperf-2506 [001] 2309.073471: ip_output: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
>>> netperf-2506 [001] 2309.073472: dev_queue_xmit: dev=eth10 skbaddr=f5f65780 len=1514
>>> netperf-2506 [001] 2309.073473: dev_queue_xmit: dev=eth10 skbaddr=f5f65000 len=1514
>>> netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f3decf00 len=1514
>>> netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f4802840 len=602
>>> <idle>-0 [001] 2309.073615: netdev_start_xmit: dev=eth10 skbaddr=f5f65780 len=1514
>>> <idle>-0 [001] 2309.073616: netdev_start_xmit: dev=eth10 skbaddr=f5f65000 len=1514
>>> <idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f3decf00 len=1514
>>> <idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f4802840 len=602
>>>
>>> UDP recv
>>> <idle>-0 [001] 3671.663678: netdev_receive_skb: dev=eth10 skbaddr=f5f72d80 len=1500
>>> <idle>-0 [001] 3671.663678: ip_rcv: skbaddr=f5f72d80 saddr=192.168.100.2 daddr=192.168.100.5
>>> <idle>-0 [001] 3671.663680: ip_frag_queue: skbaddr=f5f72d80 prev=(null)
>>> <idle>-0 [001] 3671.663681: netdev_receive_skb: dev=eth10 skbaddr=f5f6aa80 len=1500
>>> <idle>-0 [001] 3671.663681: ip_rcv: skbaddr=f5f6aa80 saddr=192.168.100.2 daddr=192.168.100.5
>>> <idle>-0 [001] 3671.663681: ip_frag_queue: skbaddr=f5f6aa80 prev=f5f72d80
>>> <idle>-0 [000] 3671.663702: netdev_receive_skb: dev=eth10 skbaddr=f4800840 len=1500
>>> <idle>-0 [000] 3671.663703: ip_rcv: skbaddr=f4800840 saddr=192.168.100.2 daddr=192.168.100.5
>>> <idle>-0 [000] 3671.663703: ip_frag_queue: skbaddr=f4800840 prev=f5f6aa80
>>> <idle>-0 [000] 3671.663704: netdev_receive_skb: dev=eth10 skbaddr=f4a88b40 len=588
>>> <idle>-0 [000] 3671.663705: ip_rcv: skbaddr=f4a88b40 saddr=192.168.100.2 daddr=192.168.100.5
>>> <idle>-0 [000] 3671.663705: ip_frag_queue: skbaddr=f4a88b40 prev=f4800840
>>> <idle>-0 [000] 3671.663706: skb_clone: original=f4a88b40 clone=f5fff480
>>> <idle>-0 [000] 3671.663707: kfree_skb: skbaddr=f5f72d80 protocol=2048 location=c0715f1a
>>> <idle>-0 [000] 3671.663707: ip_frag_reasm: head=f4a88b40 len=1480
>>> <idle>-0 [000] 3671.663711: udp_rcv: skbaddr=f4a88b40 sport=57915 dport=37634
>>> netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f4a88b40 len=5000
>>> netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f5f6aa80 len=1480
>>> netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f4800840 len=1480
>>> netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f5fff480 len=568
>>>
>>> RAW send
>>> send-2431 [001] 1813.799957: raw_sendmsg: sk=f4a37200 len=1500
>>> send-2431 [001] 1813.799959: senddata_copy_skb: sk=f4a37200 skbaddr=f3dec180 len=1500
>>> send-2431 [001] 1813.799960: ip_output: skbaddr=f3dec180 saddr=192.168.100.5 daddr=192.168.100.2
>>> send-2431 [001] 1813.799960: dev_queue_xmit: dev=eth10 skbaddr=f3dec180 len=1514
>>> send-2431 [001] 1813.799961: netdev_start_xmit: dev=eth10 skbaddr=f3dec180 len=1514
>>>
>>> RAW recv
>>> <idle>-0 [000] 2052.858947: netdev_receive_skb: dev=eth1 skbaddr=f5f66000 len=1500
>>> <idle>-0 [000] 2052.858947: ip_rcv: skbaddr=f5f66000 saddr=192.168.101.2 daddr=192.168.101.5
>>> <idle>-0 [000] 2052.858951: skb_clone: original=f5f66000 clone=f3e43cc0
>>> <idle>-0 [000] 2052.858952: raw_rcv: skbaddr=f3e43cc0 len=1476
>>> recv-2499 [001] 2052.858970: skb_copy_datagram_iovec: skbaddr=f3e43cc0 len=1500
>>>
>>> Best Regards,
>>> Koki Sanagi<sanagi.koki@jp.fujitsu.com>
>>>
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe netdev" in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>>
>>>
>>
>
>
>
>
--
Regards
Yang Hongyang
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 0/5] tracing/events: add tracepoint to TCP/IP stack and netdev layer
2010-01-18 8:26 [PATCH 0/5] tracing/events: add tracepoint to TCP/IP stack and netdev layer Koki Sanagi
2010-01-19 7:15 ` Yang Hongyang
@ 2010-01-20 1:41 ` Yang Hongyang
2010-01-20 7:03 ` Koki Sanagi
1 sibling, 1 reply; 6+ messages in thread
From: Yang Hongyang @ 2010-01-20 1:41 UTC (permalink / raw)
To: Koki Sanagi; +Cc: netdev, davem, nhorman, izumi.taku, kaneshige.kenji
Koki Sanagi wrote:
> These patch-set adds some tracepoints to the TCP/IP stack and netdev layer.
>
> As described below,
> http://marc.info/?l=linux-netdev&m=126096487212459&w=2
> dev_hard_start_xmit and netif_receive_skb are important location to add
> tracepoints. Because driver depends on an machine environment, we usually
> check this point when solving network problem. But these two points are lack of
> infrotmation that what packets are passed, So I add other tracepoints to know
> what packets are passed and to give some merits.
>
> Added tracepoints are at transmit/receive entry of TCP, UDP, RAW, IPv4, driver
> and Qdisc. And tracepoints to output information to make connection
> between these entry tracepoints are also added.
>
> These tracepoints give some merits.
> For example, they enable us to measure packet latency.
> By using tcpdump, we can analyze what packets are passed, but we cannot analyze
> how long it takes to pass through network layer(In other words, latency of TCP
> layer, IP layer and Qdisc).
> Packet latency is very useful information to solve a network bad performance or
> bad reaction network application, packet latency is very useful information.
If you could point out what the actual problem these tracepoints can solve,
It will be a lot more peruasive.
And this patch-set contains a lot of tracepoints.Can you figure out what's
the most important?Are these tracepoints really necessary.You could send out
the most important tracepoints instead of sending out all these.
>
> As an other use case, unlike a tcpdump, they are recorded in ftrace buffer
> without IO burden. Only when you need, output recorded information.
> I mean, they are fit to run always.
>
> Details of added tracepoint are below.
>
> skb_clone chase the cloned skb
> senddata_copy_skb copy userdata to skb for transmit
>
> netdev_start_xmit entry of driver's transmit function.
> netdev_receive_skb entry of netstack(receive).
> dev_queue_xmit entry of Qdisc.
>
> ip_queue_xmit entry of IP layer(TCP transmit)
> ip_push_pending_frames entry of IP layer(UDP transmit)
> ip_output entry of IP layer(RAW transmit)
> ip_frag_queue aggregate fragmented packet
> ip_frag_reasm reasemble fragmented packet
> ip_rcv entry of IP layer(receive)
>
> tcp_sendmsg entry of TCP layer(transmit)
> tcp_sendpage entry of TCP layer(transmit)
> tcp_push_pending_frames all data(tcp_sendmsg have) have copied to skb
> tcp_v4_rcv entry of TCP layer(receive)
>
> udp_sendmsg entry of UDP layer(transmit)
> udp_sendpage entry of UDP layer(transmit)
> udp_push_pending_frames all data(udp_sendmsg have) have copied to skb
> udp_rcv entry of UDP layer(receive).
>
> raw_sendmsg entry of RAW layer(transmit).
> raw_rcv entry of RAW layer(receive).
>
> Outputs are below.
>
> TCP send
> netperf-2513 [000] 2603.586818: tcp_sendmsg: sk=f644eac0 len=5000
> netperf-2513 [000] 2603.586818: senddata_copy_skb: sk=f644eac0 skbaddr=f7159800 len=1416
> netperf-2513 [000] 2603.586820: senddata_copy_skb: sk=f644eac0 skbaddr=f7159500 len=1448
> netperf-2513 [000] 2603.586821: senddata_copy_skb: sk=f644eac0 skbaddr=f7158d80 len=1448
> netperf-2513 [000] 2603.586822: senddata_copy_skb: sk=f644eac0 skbaddr=f7159c80 len=688
> netperf-2513 [000] 2603.586822: tcp_push_pending_frames: sk=f644eac0 sport=54875 dport=51707
> tail-2514 [001] 2603.587577: skb_clone: original=f7159800 clone=f71598b4
> tail-2514 [001] 2603.587578: ip_queue_xmit: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587579: ip_output: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587579: dev_queue_xmit: dev=eth10 skbaddr=f71598b4 len=1514
> tail-2514 [001] 2603.587580: netdev_start_xmit: dev=eth10 skbaddr=f71598b4 len=1514
> tail-2514 [001] 2603.587628: skb_clone: original=f7159500 clone=f71595b4
> tail-2514 [001] 2603.587629: ip_queue_xmit: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587630: ip_output: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587631: dev_queue_xmit: dev=eth10 skbaddr=f71595b4 len=1514
> tail-2514 [001] 2603.587632: netdev_start_xmit: dev=eth10 skbaddr=f71595b4 len=1514
> tail-2514 [001] 2603.587632: skb_clone: original=f7158d80 clone=f7158e34
> tail-2514 [001] 2603.587633: ip_queue_xmit: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587634: ip_output: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587635: dev_queue_xmit: dev=eth10 skbaddr=f7158e34 len=1514
> tail-2514 [001] 2603.587635: netdev_start_xmit: dev=eth10 skbaddr=f7158e34 len=1514
> tail-2514 [001] 2603.587685: skb_clone: original=f7159c80 clone=f7159d34
> tail-2514 [001] 2603.587685: ip_queue_xmit: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587687: ip_output: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
> tail-2514 [001] 2603.587687: dev_queue_xmit: dev=eth10 skbaddr=f7159d34 len=1514
> tail-2514 [001] 2603.587688: netdev_start_xmit: dev=eth10 skbaddr=f7159d34 len=1514
>
> TCP recv
> <idle>-0 [001] 3499.386601: netdev_receive_skb: dev=eth10 skbaddr=f4a88480 len=1500
> <idle>-0 [001] 3499.386602: ip_rcv: skbaddr=f4a88480 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [001] 3499.386604: tcp_v4_rcv: skbaddr=f4a88480 sport=51035 dport=34474
> <idle>-0 [000] 3499.386619: netdev_receive_skb: dev=eth10 skbaddr=f3c75300 len=1500
> <idle>-0 [000] 3499.386619: ip_rcv: skbaddr=f3c75300 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [000] 3499.386622: tcp_v4_rcv: skbaddr=f3c75300 sport=51035 dport=34474
> netserver-2519 [000] 3499.386626: skb_copy_datagram_iovec: skbaddr=f4a88480 len=1448
> netserver-2519 [000] 3499.386628: skb_copy_datagram_iovec: skbaddr=f3c75300 len=1448
>
> UDP send
> netperf-2506 [001] 2309.073460: udp_sendmsg: sk=f662e6c0 len=5000
> netperf-2506 [001] 2309.073466: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65780 len=1472
> netperf-2506 [001] 2309.073467: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65000 len=1480
> netperf-2506 [001] 2309.073468: senddata_copy_skb: sk=f662e6c0 skbaddr=f3decf00 len=1480
> netperf-2506 [001] 2309.073469: senddata_copy_skb: sk=f662e6c0 skbaddr=f4802840 len=568
> netperf-2506 [001] 2309.073470: udp_push_pending_frames: sk=f662e6c0 sport=42679 dport=47640
> netperf-2506 [001] 2309.073470: ip_push_pending_frames: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
> netperf-2506 [001] 2309.073471: ip_output: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
> netperf-2506 [001] 2309.073472: dev_queue_xmit: dev=eth10 skbaddr=f5f65780 len=1514
> netperf-2506 [001] 2309.073473: dev_queue_xmit: dev=eth10 skbaddr=f5f65000 len=1514
> netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f3decf00 len=1514
> netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f4802840 len=602
> <idle>-0 [001] 2309.073615: netdev_start_xmit: dev=eth10 skbaddr=f5f65780 len=1514
> <idle>-0 [001] 2309.073616: netdev_start_xmit: dev=eth10 skbaddr=f5f65000 len=1514
> <idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f3decf00 len=1514
> <idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f4802840 len=602
>
> UDP recv
> <idle>-0 [001] 3671.663678: netdev_receive_skb: dev=eth10 skbaddr=f5f72d80 len=1500
> <idle>-0 [001] 3671.663678: ip_rcv: skbaddr=f5f72d80 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [001] 3671.663680: ip_frag_queue: skbaddr=f5f72d80 prev=(null)
> <idle>-0 [001] 3671.663681: netdev_receive_skb: dev=eth10 skbaddr=f5f6aa80 len=1500
> <idle>-0 [001] 3671.663681: ip_rcv: skbaddr=f5f6aa80 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [001] 3671.663681: ip_frag_queue: skbaddr=f5f6aa80 prev=f5f72d80
> <idle>-0 [000] 3671.663702: netdev_receive_skb: dev=eth10 skbaddr=f4800840 len=1500
> <idle>-0 [000] 3671.663703: ip_rcv: skbaddr=f4800840 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [000] 3671.663703: ip_frag_queue: skbaddr=f4800840 prev=f5f6aa80
> <idle>-0 [000] 3671.663704: netdev_receive_skb: dev=eth10 skbaddr=f4a88b40 len=588
> <idle>-0 [000] 3671.663705: ip_rcv: skbaddr=f4a88b40 saddr=192.168.100.2 daddr=192.168.100.5
> <idle>-0 [000] 3671.663705: ip_frag_queue: skbaddr=f4a88b40 prev=f4800840
> <idle>-0 [000] 3671.663706: skb_clone: original=f4a88b40 clone=f5fff480
> <idle>-0 [000] 3671.663707: kfree_skb: skbaddr=f5f72d80 protocol=2048 location=c0715f1a
> <idle>-0 [000] 3671.663707: ip_frag_reasm: head=f4a88b40 len=1480
> <idle>-0 [000] 3671.663711: udp_rcv: skbaddr=f4a88b40 sport=57915 dport=37634
> netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f4a88b40 len=5000
> netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f5f6aa80 len=1480
> netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f4800840 len=1480
> netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f5fff480 len=568
>
> RAW send
> send-2431 [001] 1813.799957: raw_sendmsg: sk=f4a37200 len=1500
> send-2431 [001] 1813.799959: senddata_copy_skb: sk=f4a37200 skbaddr=f3dec180 len=1500
> send-2431 [001] 1813.799960: ip_output: skbaddr=f3dec180 saddr=192.168.100.5 daddr=192.168.100.2
> send-2431 [001] 1813.799960: dev_queue_xmit: dev=eth10 skbaddr=f3dec180 len=1514
> send-2431 [001] 1813.799961: netdev_start_xmit: dev=eth10 skbaddr=f3dec180 len=1514
>
> RAW recv
> <idle>-0 [000] 2052.858947: netdev_receive_skb: dev=eth1 skbaddr=f5f66000 len=1500
> <idle>-0 [000] 2052.858947: ip_rcv: skbaddr=f5f66000 saddr=192.168.101.2 daddr=192.168.101.5
> <idle>-0 [000] 2052.858951: skb_clone: original=f5f66000 clone=f3e43cc0
> <idle>-0 [000] 2052.858952: raw_rcv: skbaddr=f3e43cc0 len=1476
> recv-2499 [001] 2052.858970: skb_copy_datagram_iovec: skbaddr=f3e43cc0 len=1500
>
> Best Regards,
> Koki Sanagi <sanagi.koki@jp.fujitsu.com>
>
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
>
--
Regards
Yang Hongyang
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 0/5] tracing/events: add tracepoint to TCP/IP stack and netdev layer
2010-01-20 1:41 ` Yang Hongyang
@ 2010-01-20 7:03 ` Koki Sanagi
0 siblings, 0 replies; 6+ messages in thread
From: Koki Sanagi @ 2010-01-20 7:03 UTC (permalink / raw)
To: Yang Hongyang; +Cc: netdev, davem, nhorman, izumi.taku, kaneshige.kenji
(2010/01/20 10:41), Yang Hongyang wrote:
> Koki Sanagi wrote:
>> These patch-set adds some tracepoints to the TCP/IP stack and netdev layer.
>>
>> As described below,
>> http://marc.info/?l=linux-netdev&m=126096487212459&w=2
>> dev_hard_start_xmit and netif_receive_skb are important location to add
>> tracepoints. Because driver depends on an machine environment, we usually
>> check this point when solving network problem. But these two points are lack of
>> infrotmation that what packets are passed, So I add other tracepoints to know
>> what packets are passed and to give some merits.
>>
>> Added tracepoints are at transmit/receive entry of TCP, UDP, RAW, IPv4, driver
>> and Qdisc. And tracepoints to output information to make connection
>> between these entry tracepoints are also added.
>>
>> These tracepoints give some merits.
>> For example, they enable us to measure packet latency.
>> By using tcpdump, we can analyze what packets are passed, but we cannot analyze
>> how long it takes to pass through network layer(In other words, latency of TCP
>> layer, IP layer and Qdisc).
>> Packet latency is very useful information to solve a network bad performance or
>> bad reaction network application, packet latency is very useful information.
>
> If you could point out what the actual problem these tracepoints can solve,
> It will be a lot more peruasive.
>
> And this patch-set contains a lot of tracepoints.Can you figure out what's
> the most important?Are these tracepoints really necessary.You could send out
> the most important tracepoints instead of sending out all these.
>
Main purpose of this patch-set is to trace packets without tcpdump.
Tcpdump is not fit to run always, because it causes heavy I/O burden(mainly disk).
On the other hand, ftrace's I/O burden is nothing.
Most important points are netdev_start_xmit and netdev_receive_skb.
Because this is pass points for xmit/receive packets.
But only these two points, we cannot determine what packets are passed.
At least, IP address is needed(ip_output, ip_rcv).
Thanks
Koki Sanagi
>>
>> As an other use case, unlike a tcpdump, they are recorded in ftrace buffer
>> without IO burden. Only when you need, output recorded information.
>> I mean, they are fit to run always.
>>
>> Details of added tracepoint are below.
>>
>> skb_clone chase the cloned skb
>> senddata_copy_skb copy userdata to skb for transmit
>>
>> netdev_start_xmit entry of driver's transmit function.
>> netdev_receive_skb entry of netstack(receive).
>> dev_queue_xmit entry of Qdisc.
>>
>> ip_queue_xmit entry of IP layer(TCP transmit)
>> ip_push_pending_frames entry of IP layer(UDP transmit)
>> ip_output entry of IP layer(RAW transmit)
>> ip_frag_queue aggregate fragmented packet
>> ip_frag_reasm reasemble fragmented packet
>> ip_rcv entry of IP layer(receive)
>>
>> tcp_sendmsg entry of TCP layer(transmit)
>> tcp_sendpage entry of TCP layer(transmit)
>> tcp_push_pending_frames all data(tcp_sendmsg have) have copied to skb
>> tcp_v4_rcv entry of TCP layer(receive)
>>
>> udp_sendmsg entry of UDP layer(transmit)
>> udp_sendpage entry of UDP layer(transmit)
>> udp_push_pending_frames all data(udp_sendmsg have) have copied to skb
>> udp_rcv entry of UDP layer(receive).
>>
>> raw_sendmsg entry of RAW layer(transmit).
>> raw_rcv entry of RAW layer(receive).
>>
>> Outputs are below.
>>
>> TCP send
>> netperf-2513 [000] 2603.586818: tcp_sendmsg: sk=f644eac0 len=5000
>> netperf-2513 [000] 2603.586818: senddata_copy_skb: sk=f644eac0 skbaddr=f7159800 len=1416
>> netperf-2513 [000] 2603.586820: senddata_copy_skb: sk=f644eac0 skbaddr=f7159500 len=1448
>> netperf-2513 [000] 2603.586821: senddata_copy_skb: sk=f644eac0 skbaddr=f7158d80 len=1448
>> netperf-2513 [000] 2603.586822: senddata_copy_skb: sk=f644eac0 skbaddr=f7159c80 len=688
>> netperf-2513 [000] 2603.586822: tcp_push_pending_frames: sk=f644eac0 sport=54875 dport=51707
>> tail-2514 [001] 2603.587577: skb_clone: original=f7159800 clone=f71598b4
>> tail-2514 [001] 2603.587578: ip_queue_xmit: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587579: ip_output: skbaddr=f71598b4 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587579: dev_queue_xmit: dev=eth10 skbaddr=f71598b4 len=1514
>> tail-2514 [001] 2603.587580: netdev_start_xmit: dev=eth10 skbaddr=f71598b4 len=1514
>> tail-2514 [001] 2603.587628: skb_clone: original=f7159500 clone=f71595b4
>> tail-2514 [001] 2603.587629: ip_queue_xmit: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587630: ip_output: skbaddr=f71595b4 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587631: dev_queue_xmit: dev=eth10 skbaddr=f71595b4 len=1514
>> tail-2514 [001] 2603.587632: netdev_start_xmit: dev=eth10 skbaddr=f71595b4 len=1514
>> tail-2514 [001] 2603.587632: skb_clone: original=f7158d80 clone=f7158e34
>> tail-2514 [001] 2603.587633: ip_queue_xmit: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587634: ip_output: skbaddr=f7158e34 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587635: dev_queue_xmit: dev=eth10 skbaddr=f7158e34 len=1514
>> tail-2514 [001] 2603.587635: netdev_start_xmit: dev=eth10 skbaddr=f7158e34 len=1514
>> tail-2514 [001] 2603.587685: skb_clone: original=f7159c80 clone=f7159d34
>> tail-2514 [001] 2603.587685: ip_queue_xmit: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587687: ip_output: skbaddr=f7159d34 saddr=192.168.100.5 daddr=192.168.100.2
>> tail-2514 [001] 2603.587687: dev_queue_xmit: dev=eth10 skbaddr=f7159d34 len=1514
>> tail-2514 [001] 2603.587688: netdev_start_xmit: dev=eth10 skbaddr=f7159d34 len=1514
>>
>> TCP recv
>> <idle>-0 [001] 3499.386601: netdev_receive_skb: dev=eth10 skbaddr=f4a88480 len=1500
>> <idle>-0 [001] 3499.386602: ip_rcv: skbaddr=f4a88480 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [001] 3499.386604: tcp_v4_rcv: skbaddr=f4a88480 sport=51035 dport=34474
>> <idle>-0 [000] 3499.386619: netdev_receive_skb: dev=eth10 skbaddr=f3c75300 len=1500
>> <idle>-0 [000] 3499.386619: ip_rcv: skbaddr=f3c75300 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [000] 3499.386622: tcp_v4_rcv: skbaddr=f3c75300 sport=51035 dport=34474
>> netserver-2519 [000] 3499.386626: skb_copy_datagram_iovec: skbaddr=f4a88480 len=1448
>> netserver-2519 [000] 3499.386628: skb_copy_datagram_iovec: skbaddr=f3c75300 len=1448
>>
>> UDP send
>> netperf-2506 [001] 2309.073460: udp_sendmsg: sk=f662e6c0 len=5000
>> netperf-2506 [001] 2309.073466: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65780 len=1472
>> netperf-2506 [001] 2309.073467: senddata_copy_skb: sk=f662e6c0 skbaddr=f5f65000 len=1480
>> netperf-2506 [001] 2309.073468: senddata_copy_skb: sk=f662e6c0 skbaddr=f3decf00 len=1480
>> netperf-2506 [001] 2309.073469: senddata_copy_skb: sk=f662e6c0 skbaddr=f4802840 len=568
>> netperf-2506 [001] 2309.073470: udp_push_pending_frames: sk=f662e6c0 sport=42679 dport=47640
>> netperf-2506 [001] 2309.073470: ip_push_pending_frames: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
>> netperf-2506 [001] 2309.073471: ip_output: skbaddr=f5f65780 saddr=192.168.100.5 daddr=192.168.100.2
>> netperf-2506 [001] 2309.073472: dev_queue_xmit: dev=eth10 skbaddr=f5f65780 len=1514
>> netperf-2506 [001] 2309.073473: dev_queue_xmit: dev=eth10 skbaddr=f5f65000 len=1514
>> netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f3decf00 len=1514
>> netperf-2506 [001] 2309.073474: dev_queue_xmit: dev=eth10 skbaddr=f4802840 len=602
>> <idle>-0 [001] 2309.073615: netdev_start_xmit: dev=eth10 skbaddr=f5f65780 len=1514
>> <idle>-0 [001] 2309.073616: netdev_start_xmit: dev=eth10 skbaddr=f5f65000 len=1514
>> <idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f3decf00 len=1514
>> <idle>-0 [000] 2309.073633: netdev_start_xmit: dev=eth10 skbaddr=f4802840 len=602
>>
>> UDP recv
>> <idle>-0 [001] 3671.663678: netdev_receive_skb: dev=eth10 skbaddr=f5f72d80 len=1500
>> <idle>-0 [001] 3671.663678: ip_rcv: skbaddr=f5f72d80 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [001] 3671.663680: ip_frag_queue: skbaddr=f5f72d80 prev=(null)
>> <idle>-0 [001] 3671.663681: netdev_receive_skb: dev=eth10 skbaddr=f5f6aa80 len=1500
>> <idle>-0 [001] 3671.663681: ip_rcv: skbaddr=f5f6aa80 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [001] 3671.663681: ip_frag_queue: skbaddr=f5f6aa80 prev=f5f72d80
>> <idle>-0 [000] 3671.663702: netdev_receive_skb: dev=eth10 skbaddr=f4800840 len=1500
>> <idle>-0 [000] 3671.663703: ip_rcv: skbaddr=f4800840 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [000] 3671.663703: ip_frag_queue: skbaddr=f4800840 prev=f5f6aa80
>> <idle>-0 [000] 3671.663704: netdev_receive_skb: dev=eth10 skbaddr=f4a88b40 len=588
>> <idle>-0 [000] 3671.663705: ip_rcv: skbaddr=f4a88b40 saddr=192.168.100.2 daddr=192.168.100.5
>> <idle>-0 [000] 3671.663705: ip_frag_queue: skbaddr=f4a88b40 prev=f4800840
>> <idle>-0 [000] 3671.663706: skb_clone: original=f4a88b40 clone=f5fff480
>> <idle>-0 [000] 3671.663707: kfree_skb: skbaddr=f5f72d80 protocol=2048 location=c0715f1a
>> <idle>-0 [000] 3671.663707: ip_frag_reasm: head=f4a88b40 len=1480
>> <idle>-0 [000] 3671.663711: udp_rcv: skbaddr=f4a88b40 sport=57915 dport=37634
>> netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f4a88b40 len=5000
>> netserver-2525 [000] 3671.663718: skb_copy_datagram_iovec: skbaddr=f5f6aa80 len=1480
>> netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f4800840 len=1480
>> netserver-2525 [000] 3671.663719: skb_copy_datagram_iovec: skbaddr=f5fff480 len=568
>>
>> RAW send
>> send-2431 [001] 1813.799957: raw_sendmsg: sk=f4a37200 len=1500
>> send-2431 [001] 1813.799959: senddata_copy_skb: sk=f4a37200 skbaddr=f3dec180 len=1500
>> send-2431 [001] 1813.799960: ip_output: skbaddr=f3dec180 saddr=192.168.100.5 daddr=192.168.100.2
>> send-2431 [001] 1813.799960: dev_queue_xmit: dev=eth10 skbaddr=f3dec180 len=1514
>> send-2431 [001] 1813.799961: netdev_start_xmit: dev=eth10 skbaddr=f3dec180 len=1514
>>
>> RAW recv
>> <idle>-0 [000] 2052.858947: netdev_receive_skb: dev=eth1 skbaddr=f5f66000 len=1500
>> <idle>-0 [000] 2052.858947: ip_rcv: skbaddr=f5f66000 saddr=192.168.101.2 daddr=192.168.101.5
>> <idle>-0 [000] 2052.858951: skb_clone: original=f5f66000 clone=f3e43cc0
>> <idle>-0 [000] 2052.858952: raw_rcv: skbaddr=f3e43cc0 len=1476
>> recv-2499 [001] 2052.858970: skb_copy_datagram_iovec: skbaddr=f3e43cc0 len=1500
>>
>> Best Regards,
>> Koki Sanagi<sanagi.koki@jp.fujitsu.com>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe netdev" in
>> the body of a message to majordomo@vger.kernel.org
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>>
>>
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2010-01-20 7:04 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-01-18 8:26 [PATCH 0/5] tracing/events: add tracepoint to TCP/IP stack and netdev layer Koki Sanagi
2010-01-19 7:15 ` Yang Hongyang
2010-01-20 1:08 ` Koki Sanagi
2010-01-20 1:52 ` Yang Hongyang
2010-01-20 1:41 ` Yang Hongyang
2010-01-20 7:03 ` Koki Sanagi
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