Hi all,
I am using CBQ to limit the packet transmission rate to some small
value(say 1Mbit...10Kbit) over an ethernet interface so that I can see
queue building up at output side (having the queue length >10 or so while
sending heavy traffic).
The set up I am using is something like this
dst router src
---------- ---------- ----------
| | eth1 | | | |
| |-------------------- | |-------------------| |
--------- --------- ---------
178.18.0.1 178.18.0.2 178.19.0.1 178.19.0.2
All 3 m/cs are connected thru' cross cables. The src m/c sends the
traffic to dst m/c using netperf.
I am defining only one class at m/c router on interface eth1. The tc
rules set up for doing so are following.
tc qdisc add dev eth1 root handle 1: cbq bandwidth 10Mbit cell 8 avpkt
1000 mpu 64
tc class add dev eth1 parent 1:0 classud 1:1 cbq bandwidth 10Mbit rate
1kbit allot 1514 cell 8 weigth 100bit prio 5 maxburst 20 avpkt 1000
tc filter add dev eth1 parent 1:0 protocol ip prio 100 u32 match ip dst
178.18.0.1 flowid 1:1
But the result I get from netperf gives me the throughput of 6.81 Mbit
even after setting the rate to 1Kbit.
Another problem is that the queue length is 1 after enqueueing
the packet at any time even if I send the traffic using 'ping -f
178.18.0.1'.
Can anyone tell me what could be the problem? Am I missing something?
Thanks in advance.
regards,
Deepika
Ps: I am not subscribed to this mailing list so please reply to my
personal account.
----------------------------------------------------------------------------
Deepika Kakrania
Sasken Communication Technologies Limited
Phone No:(080) 5578 300 Extn:8059
5289906 (res)
Email: deepika@sasi.com
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Tue Jul 31 2001 - 21:00:26 EST