[ovs-discuss] Multiple PMD threads for DPDK ports

[Loftus, Ciara]

> Hi All,
> 
>              I am creating a OVS bridge and attaching two dpdk ports(dpdk0 and
> dpdk1) to that bridge. I am using OVS version 2.5. After attaching the two
> ports to the bridge, I am observing that only one PMD thread is getting
> created for the two dpdk ports.
>              Based on the OVS code, I understand that, OVS is finding the NUMA
> nodes and cores during initialization and it is creating PMD threads based on
> the number of cores of NUMA nodes. In my test case, I am seeing the
> number of numa nodes as 1 and cores as 1. is it possible in OVS to create a
> PMD thread per dpdk port?
>          If possible, I would like to know how can I create two PMD threads in this
> case. Could anyone help me on this.

Hi,

You can specify the mask of cores to use like so:

ovs-vsctl set Open_vSwitch . other_config:pmd-cpu-mask=3

This set PMD threads on cores 0,1

Thanks,
Ciara

> 
> Regards,
> Bhanu.