I'm using openstack-ansible to deploy openstack on centos 7.5 ( we are 100% centos shop )
Sent from my iPhone > On Sep 28, 2018, at 1:45 AM, Remo Mattei <r...@italy1.com> wrote: > > 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