Hi,
i followed the Install.DPDK.md initially, thats where i got
ovs-vsctl set Interface vhost-user-2 options:n_rxq=<requested queues>
to set the rx queues for vhost-user interfaces. Im using libvirt, so im not
passing any cli arguments, rather my xml snippet looks like this:
<interface type='vhostuser'>
<mac address='52:54:00:e3:eb:b2'/>
<source type='unix' path='/usr/local/var/run/openvswitch/vhost-user-0'
mode='client'/>
<model type='virtio'/>
<driver queues='2'/>
</interface>
<interface type='vhostuser'>
<mac address='52:54:00:26:50:09'/>
<source type='unix' path='/usr/local/var/run/openvswitch/vhost-user-1'
mode='client'/>
<model type='virtio'/>
<driver queues='2'/>
</interface>
I also tried with an additional name parameter like so:
<driver name='vhost' queues='2'/>
as stated for "running ovs-vswitchd with DPDK backend inside a VM" (which im
not doing right now), but this also did not change anything.
Best regards
Felix
-----Ursprüngliche Nachricht-----
Von: Loftus, Ciara [mailto:[email protected]]
Gesendet: Montag, 4. April 2016 12:01
An: Felix Brucker <[email protected]>
Cc: [email protected]
Betreff: RE: [ovs-discuss] [OVS-DPDK] vhost-user with multiple queues does not
work
>
> Hi,
>
> setting
>
> ovs-vsctl set Open_vSwitch . other_config:n-dpdk-rxqs=2
>
> did not create two queues inside the guest, from the name of the
> command i guess it sets the number of rx queues for the pmd host
> interface to 2, but not the vhost-user interface for the vm.
> Im using branch-2.5 because a bug i encountered regarding vhost-thread
> was fixed 6 days ago on that branch.
>
> Best regards
> Felix
Can you share the command line you are using to start the VM? Do you have the
necessary fields set correctly? eg.
qemu-system-x86_64 ...
-chardev socket,id=char0,path=/my/sock
-netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce,queues=2
-device
virtio-net-pci,mac=00:00:00:00:00:01,netdev=mynet1,mrg_rxbuf=off,mq=on,vectors=6
There's more info in INSTALL.DPDK.md on configuring multiqueue.
Thanks,
Ciara
>
>
> -----Ursprüngliche Nachricht-----
> Von: Loftus, Ciara [mailto:[email protected]]
> Gesendet: Montag, 4. April 2016 11:29
> An: Felix Brucker <[email protected]>; [email protected]
> Betreff: RE: [ovs-discuss] [OVS-DPDK] vhost-user with multiple queues
> does not work
>
> >
> > Hi,
> >
> > when configuring OVS vhost-user interfaces with multiple queues like so:
> >
> > ovs-vsctl set Interface vhost-user-0 options:n_rxq=2 ovs-vsctl set
> > Interface vhost-user-1 options:n_rxq=2
> >
> > i get the following warnings when starting ovs-vswitchd:
> >
> > 2016-04-04T08:53:28Z|00038|netdev|WARN|vhost-user-0: arguments
> > provided to device that is not configurable
> > 2016-04-04T08:53:28Z|00039|netdev|WARN|vhost-user-1: arguments
> > provided to device that is not configurable
> >
> > The guest vm also does not have multiple queues enabled as they are
> > not set in ovs.
> > Im using OVS 2.5 from git -> branch-2.5 -> commit
> > e099c86ca432d1daeaf8edb66225e7edf061c0b0
>
> Hi,
>
> If you are using branch-2.5 you cannot use the n_rxq field. Instead
> you need to set multiple queues like so:
> ovs-vsctl set Open_vSwitch . other_config:n-dpdk-rxqs=4
>
> This sets the number of rxqs for all devices to 4.
>
> Thanks,
> Ciara
>
> >
> > Someone had a similar issue or knows a fix?
> >
> > Best regards
> > Felix
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