*Hi All,* I am following the same instructions as given in http://openvswitch.org/support/config-cookbooks/qos-rate-limiting/
I have exactly the same setup, except for the measurement host, but I don't see any difference in the netperf results, I have given more details in the previous post. Any suggestions/input please? *Hi Jesse,* Ok, So that means hardware should be configurable enough, that it understands VMs, and QoS for each VM? Is there any way to set egress QoS on the NIC? * ---------------------------- Thanks & Regards Mohit Dhingra +919611190435* On 14 February 2012 00:26, Jesse Gross <je...@nicira.com> wrote: > On Sun, Feb 12, 2012 at 10:18 AM, Mohit Dhingra <mohitdhing...@gmail.com> > wrote: > > Hi Jesse, > > > > Yes, I see your point that there is no benefit of controlling incoming > > traffic, because anyways all traffic will arrive atleast till OVS level > from > > physical NIC, so that channel will be the bottleneck anyway. > > > > I configured OVS using Xen as Hypervisor, and, I am able to create VMs > which > > automatically gets connected to the bridge that OVS created. But I am not > > seeing any QoS control in the VM. > > > > Here is the bridges and interfaces, > > cadlab:~ # brctl show > > bridge name bridge id STP enabled interfaces > > eth0 0000.7071bc62737a no peth0 > > > > vif6.0 > > > > vif8.0 > > > > > > I configured QoS on one of the VMs like this: > > cadlab:~ # ovs-vsctl set Interface vif8.0 ingress_policing_rate=1000 > > cadlab:~ # ovs-vsctl set Interface vif8.0 ingress_policing_burst=100 > > > > VMs are as follows : > > cadlab:~ # xm list > > Name ID Mem VCPUs State > > Time(s) > > Domain-0 0 6012 8 r----- > > 2271.1 > > opensuse11 8 1024 1 -b---- > > 15.3 > > opensuse11-clone 6 1024 1 -b---- > > 21.4 > > > > Then I ran netperf test, I don't see max of 1 Mbps !!! > > vm1@linux-g9jl:~> netperf -H 10.112.10.35 > > TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.112.10.35 > > (10.112.10.35) port 0 AF_INET : demo > > Recv Send Send > > Socket Socket Message Elapsed > > Size Size Size Time Throughput > > bytes bytes bytes secs. 10^6bits/sec > > > > 87380 16384 16384 10.02 93.46 > > > > I see 93 Mbps !!! Why is it so? > > > > Does anybody can tell me where I am wrong? > > You need to use egress QoS on the NIC, since that's where the actual > choke point is. >
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