Hi
I am trying to understand the statistics from ovs-dpctl and reconcile that with
stats from other tools. I am finding it difficult to make sense of the numbers,
perhaps someone can point me to some documentation about how this works? There
are numerous links on the web and it is quite confusing as I am not sure which
is authoritative.
My setup is as follows:
1. Two machines connected back-to-back via 10G NICs
2. Both machines running RHEL 6.4/ wKVM; Two VMs on each, both running
CentOS 6.4
3. OVS 1.10 installed on both;
4. Created bridge (ovsbr0) and connected the VMs via macvtap (bridge
mode -allegedly; VMM says bridge mode, but the host cannot VM and vice-versa;
VMs can communicate with external hosts/VMs)
1. I also have linux bridges (br0 & br1) on these VMs but they bridge
the VMs to different physical ports (p4p1 and em1)
5. Ran netperf (and netserver) between host1-vm1 and
host2-vm1successfully; got stats from neperf
I have attached the stats outputs from ovs-dpctl, ifconfig -a and ip -s link
and I cannot reconcile these:
- The port numbers do not match across these, but I can ignore that for now
- The Rx packets and bytes from ovs-dpctl (port 2: p4p2) does not match (or
come close to) the ipconfig -a p4p2 or 'ip -s link' (for p4p2)
- The macvtap ports do show the traffic coming out of the VMs (I see the
increments in the same ballpark when I run netperf and observe through ip -s
link and ipconfig -a)
-
Is all traffic going through OVS bridge (ovsbr0)? Does ovs-dpctl count show
something? Do I need to enable statistics somewhere?
thx,
Kishore
[root@lab-sj1-140 ~]# ovs-vsctl show; ovs-dpctl -s show
0f10a9c0-2e52-4930-9da5-9f80ff61e8d4
Bridge "ovsbr0"
Port "p4p2"
Interface "p4p2"
Port "ovsbr0"
Interface "ovsbr0"
type: internal
ovs_version: "1.10.0"
system@ovs-system:
lookups: hit:216 missed:2738 lost:0
flows: 0
port 0: ovs-system (internal)
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 aborted:0 carrier:0
collisions:0
RX bytes:0 TX bytes:0
port 1: ovsbr0 (internal)
RX packets:206 errors:0 dropped:0 overruns:0 frame:0
TX packets:2748 errors:0 dropped:0 aborted:0 carrier:0
collisions:0
RX bytes:12844 (12.5 KiB) TX bytes:170884 (166.9 KiB)
port 2: p4p2
RX packets:2748 errors:0 dropped:0 overruns:0 frame:0
TX packets:206 errors:0 dropped:0 aborted:0 carrier:0
collisions:0
RX bytes:170884 (166.9 KiB) TX bytes:12844 (12.5 KiB)
[root@lab-sj1-140 ~]# ifconfig -a p4p2
p4p2 Link encap:Ethernet HWaddr AC:16:2D:81:A5:CC
inet6 addr: fe80::ae16:2dff:fe81:a5cc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6245887 errors:0 dropped:0 overruns:0 frame:0
TX packets:305274698 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:437394952 (417.1 MiB) TX bytes:463379950802 (431.5 GiB)
Interrupt:44 Memory:f3000000-f37fffff
[root@lab-sj1-140 ~]# ip -s link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
RX: bytes packets errors dropped overrun mcast
116899442 37694 0 0 0 0
TX: bytes packets errors dropped carrier collsns
116899442 37694 0 0 0 0
2: p4p1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether ac:16:2d:81:a5:c8 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
258708 3793 0 0 0 3766
TX: bytes packets errors dropped carrier collsns
251384 3815 0 0 0 0
3: p4p2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether ac:16:2d:81:a5:cc brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
437394952 6245887 0 0 0 2575
TX: bytes packets errors dropped carrier collsns
3818450130 305274698 0 0 0 0
4: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP
qlen 1000
link/ether 90:b1:1c:91:70:b8 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
343281614 1082790 0 0 0 373850
TX: bytes packets errors dropped carrier collsns
519856685 738525 0 0 0 0
5: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether 46:f7:e4:80:32:ef brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 0 0 0
6: ovsbr0: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether ac:16:2d:81:a5:cc brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
170884 2748 0 0 0 0
TX: bytes packets errors dropped carrier collsns
12844 206 0 0 0 0
7: br1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether 90:b1:1c:91:70:b8 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
309299541 897405 0 0 0 236455
TX: bytes packets errors dropped carrier collsns
501758821 480108 0 0 0 0
8: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether ac:16:2d:81:a5:c8 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
31264 682 0 0 0 633
TX: bytes packets errors dropped carrier collsns
900 14 0 0 0 0
11: virbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UNKNOWN
link/ether 52:54:00:72:42:7f brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 0 0 0
12: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 500
link/ether 52:54:00:72:42:7f brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 0 0 0
20: vnet2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state
UNKNOWN qlen 500
link/ether fe:54:00:d7:16:e4 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
63073 836 0 0 0 0
TX: bytes packets errors dropped carrier collsns
22630365 271214 0 0 0 0
21: vnet3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state
UNKNOWN qlen 500
link/ether fe:54:00:49:98:7b brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
900 14 0 0 0 0
TX: bytes packets errors dropped carrier collsns
116160 1815 0 0 0 0
22: macvtap1@p4p2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state
UNKNOWN qlen 500
link/ether 52:54:00:96:79:69 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
15147692 229366 0 0 0 2580
TX: bytes packets errors dropped carrier collsns
2886985322 119677 0 0 0 0
23: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state
UNKNOWN qlen 500
link/ether fe:54:00:e8:47:91 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
76972 1040 0 0 0 0
TX: bytes packets errors dropped carrier collsns
22612086 271121 0 0 0 0
24: vnet1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state
UNKNOWN qlen 500
link/ether fe:54:00:4a:d9:48 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
1072 16 0 0 0 0
TX: bytes packets errors dropped carrier collsns
115488 1803 0 0 0 0
25: macvtap0@p4p2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state
UNKNOWN qlen 500
link/ether 52:54:00:e5:2d:64 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
809935346 12267008 0 0 0 2550
TX: bytes packets errors dropped carrier collsns
1544969784 7575492 0 0 0 0
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