[ovs-dev] FW: performance issue with ovs + dpdk2.0 with vhost

Gray, Mark D mark.d.gray at intel.com
Tue May 26 09:47:03 UTC 2015


> 
> On Fri, May 15, 2015 at 02:07:07PM +0000, Rao, Ravi wrote:
> >
> > Hi All,
> >    I am trying to get a Guest VM connected to the dpdkvhost
> >    interface on a host which has the ovs running from the latest ovs
> >    git and dpdk2.0. Looks like I am missing something as 95% of
> >    traffic is not getting to the VM. Can one of you please let me
> >    know which mailing list I should be posting the details for
> >    getting a resolution. Is it this dpdk list OR would it be the
> >    openvswitch list?
> 
> This is the right place, but it would be great if you could tell us the
> configuration, how you're testing and the qemu version too.

It could be that the vhost queue is overflowing. The queue is quite
small and if you send traffic too fast it can overflow. There is a recent commit
that resolves that (netdev-dpdk: Add vhost enqueue retries -
95e9881f843896751a76481cfe7869e2c0c1270b)

> 
> fbl
> 
> _______________________________________________
> dev mailing list
> dev at openvswitch.org
> http://openvswitch.org/mailman/listinfo/dev


More information about the dev mailing list