[ovs-discuss] traffic control on OVS
durga
c.vijaya.durga at gmail.com
Thu Dec 8 08:33:24 UTC 2016
Hi All,
I have configured a very basic topology in mininet with 2 switches and a
couple of hosts.
I have configured tc on all the 4 ports of both the switches and set the tc
rate set at 1Mbps. Qdisc is htb.
Now, as I incrementally generate traffic , though I observe drops via
iperf, I fail to observe any drops on ovs portswhen I use 'ovs-ofctl
dump-ports sw'
Am I looking at wrong places are putting things together incorrectly?
Can someone help me understand why I don't notice any drops when using
ovs-ofctl ?
Few logs:
UDP client:
root at vd-Veriton-M200-A780:~# iperf -c 10.0.0.2 -u -b 10Mbps
------------------------------------------------------------
Client connecting to 10.0.0.2, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size: 208 KByte (default)
------------------------------------------------------------
[ 15] local 10.0.0.1 port 53217 connected with 10.0.0.2 port 5001
[ ID] Interval Transfer Bandwidth
[ 15] 0.0-10.0 sec 12.5 MBytes 10.5 Mbits/sec
[ 15] Sent 8922 datagrams
[ 15] Server Report:
[ 15] 0.0-11.5 sec 10.7 MBytes 7.78 Mbits/sec 0.503 ms 1306/ 8921 (15%)
[ 15] 0.0-11.5 sec 1 datagrams received out-of-order
OVS output:
root at vd-Veriton-M200-A780:~# ovs-ofctl dump-ports s33
OFPST_PORT reply (xid=0x2): 3 ports
port LOCAL: rx pkts=0, bytes=0, drop=5, errs=0, frame=0, over=0, crc=0
tx pkts=0, bytes=0, drop=0, errs=0, coll=0
port 1: rx pkts=885787, bytes=33619595672, drop=0, errs=0, frame=0,
over=0, crc=0
tx pkts=403525, bytes=26653335, drop=0, errs=0, coll=0
port 2: rx pkts=403521, bytes=26652615, drop=0, errs=0, frame=0, over=0,
crc=0
tx pkts=884488, bytes=33617623003, drop=0, errs=0, coll=0
TC qdsic output:
root at vd-Veriton-M200-A780:~# tc -s -d class show dev s33-eth2
class htb 2:1 root prio 0 quantum 100000 rate 8Mbit ceil 8Mbit linklayer
ethernet burst 1600b/1 mpu 0b overhead 0b cburst 1600b/1 mpu 0b overhead 0b
level 0
Sent 25232342 bytes 16683 pkt (dropped 1307, overlimits 0 requeues 0)
rate 0bit 0pps backlog 0b 0p requeues 0
lended: 12183 borrowed: 0 giants: 0
tokens: 15781 ctokens: 15781
Cheers!
Durga
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openvswitch.org/pipermail/ovs-discuss/attachments/20161208/d842f886/attachment-0001.html>
More information about the discuss
mailing list