[ovs-discuss] OVS+DPDK QoS rate limit issue
wangzhike at jd.com
Thu Aug 24 03:41:05 UTC 2017
I am using OVS2.7.0 and DPDK 16.11, and testing rate limit function.
I found that if the policing_rate is set very large, say 5Gbps, the rate is limited dramatically to very low value, like 800Mbps.
The command is as below:
ovs-vsctl set interface port-7zel2so9sg ingress_policing_rate=5000000 ingress_policing_burst=500000
If we set the rate lower than 4Gbps, the rate is limited correctly.
Sender (DPDK pktGen) sends out about 10Gbps udp packet, with size about 1420 IP size.
The rate limit is set on VM vhost-user-client port.
Any idea about this issue? Is that known issue?
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