https://software.intel.com/en-us/articles/configure-vhost-user-multiqueue-for-ovs-with-dpdk


From: <[email protected]> on behalf of Hui Jing 
<[email protected]>
Date: Sunday, June 11, 2017 at 5:04 AM
To: "[email protected]" <[email protected]>
Subject: [ovs-discuss] vhost-user multiqueue PMD RSS

Hi all,

I am new to OVS-DPDK and trying to figure out the mechanism of vhost-user 
multiqueue scenario. I understand that the PMD thread is created for polling 
the queues of vhost-user or physical NIC and the affinity bind PMD to queues. 
However, the PMD transmission side confused me, I would like to learn PMD 
thread mechanism and how it distributes traffic to different queues.

Let's consider this scenario: one PMD thread is responsible for two queues of 
one vhost-user, when packet destined to the vhost-user, how it decide which 
queue to trasmit? is there equivalence to RSS?
                                          =========
                                          |Rx Queue0|
Traffic ==>PMD thread ==>                      ==>Virtio Frontend in VM
                                          |Rx Queue1|
                                          =========
Thanks in advance
Best Regards,
Hui
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