[ovs-discuss] open vswitch QoS

Ben Pfaff blp at nicira.com
Mon May 2 16:41:14 UTC 2011


On Mon, May 02, 2011 at 03:40:52PM +0500, ahmad numan wrote:
> I am trying to implement the tutorial given in open vswitch documentation
> about limiting the data rate using open vswitch QoS. I am using FC 13 with
> "tun" and "sch_ingress" built as modules. I loaded these modules and used
> physical interfaces instead of VMs. I configured the rate by following
> commands.
> 
> ovs-vsctl set Interface eth0 ingress_policing_rate=1000
> ovs-vsctl set Interface eth0 ingress_policing_burst=100
> 
> i set these parameters on one machine and run netserver on other machine.
> Both machines have directly connected eth0s using a network cable. running
> netperf on the configured machine does not change the data rate.

I'd recommend using one of the actual QoS qdiscs (htb or hfsc) instead
of ingress policing.  Ingress policing causes no end of trouble and
often simply doesn't work.  (This isn't an OVS bug--OVS just
configures the ingress policing settings built into the Linux kernel.)

But: Is there anything in the log about failing to configure ingress
policing?



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