Are you using ubutu, TripleO??? Thanks
> Il giorno 27 set 2018, alle ore 20:19, Satish Patel <satish....@gmail.com> ha > scritto: > > I know this thread is old but still wanted to post my finding which > may help other folks to understand issue. > > I am dealing with same issue in my openstack network, we are media > company and dealing with lots of VoIP applications where we need to > handle high stream of udp packets, Virtio-net isn't meant to handl > high PPS rate, i ran couple of test and found no matter what txqueue > or multiqueue you set it will start dropping packet after 50kpps, I > have tried numa too but result is negative. > > Finally i have decided to move and and try SR-IOV and now i am very > very happy, SR-IOV reduce my VM guest CPU load 50% and now my NIC can > handle 200kpps without dropping any packet. > > I would say use "iptraf-ng" utility to find out packet rate and see if > its above ~40kpps. > On Fri, Jul 28, 2017 at 8:39 PM Eugene Nikanorov > <enikano...@mirantis.com> wrote: >> >> John, >> >> multiqueue support will require qemu 2.5+ >> I wonder why do you need this feature. It only will help in case of a really >> huge incoming pps or bandwidth. >> I'm not sure udp packet loss can be solved with this, but of course better >> try. >> >> my 2c. >> >> Thanks, >> Eugene. >> >>> On Fri, Jul 28, 2017 at 5:00 PM, Liping Mao (limao) <li...@cisco.com> wrote: >>> >>>> We already tune these values in the VM. Would you suggest tuning them on >>>> the compute nodes as well? >>> No need on compute nodes.(AFAIK) >>> >>> >>> How much pps your vm need to handle? >>> You can monitor CPU usage ,especially si to see where may drop. If you see >>> vhost almost reach to 100% CPU ,multi queue may help in some case. >>> >>> Thanks. >>> >>> Regards, >>> Liping Mao >>> >>>> 在 2017年7月28日，22:45，John Petrini <jpetr...@coredial.com> 写道： >>>> >>>> We already tune these values in the VM. Would you suggest tuning them on >>>> the compute nodes as well? >>> _______________________________________________ >>> Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>> Post to : openstack@lists.openstack.org >>> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> >> >> _______________________________________________ >> Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : openstack@lists.openstack.org >> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack@lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
