does rollbacking the kernel to previous version fix the problem ? i'm not sure if "perf" could give you some hints ----- Mail original ----- De: "Stefan Priebe, Profihost AG" <s.pri...@profihost.ag> À: "aderumier" <aderum...@odiso.com> Cc: "qemu-devel" <qemu-devel@nongnu.org> Envoyé: Mercredi 14 Décembre 2016 21:36:23 Objet: Re: [Qemu-devel] any known virtio-net regressions in Qemu 2.7?
Am 14.12.2016 um 16:33 schrieb Alexandre DERUMIER: > Hi Stefan, > > do you have upgraded kernel ? Yes sure. But i'm out of ideas how to debug. Sometimes it gives me constant 80MB/s, sometimes 125 and sometimes only 6. While on the host the cards are not busy. Greets, Stefan > > maybe it could be related to vhost-net module too. > > > ----- Mail original ----- > De: "Stefan Priebe, Profihost AG" <s.pri...@profihost.ag> > À: "qemu-devel" <qemu-devel@nongnu.org> > Envoyé: Mercredi 14 Décembre 2016 16:04:08 > Objet: [Qemu-devel] any known virtio-net regressions in Qemu 2.7? > > Hello, > > after upgrading a cluster OS, Qemu, ... i'm experiencing slow and > volatile network speeds inside my VMs. > > Currently I've no idea what causes this but it's related to the host > upgrades. Before i was running Qemu 2.6.2. > > I'm using virtio for the network cards. > > Greets, > Stefan >
