Am 22.08.2017 um 08:16 schrieb Alexandre DERUMIER: > Hi Stefan, > > No I don't have this behaviour. I only remember probleme with old debian > wheezy with kernel 3.2, > where I had this kind of problem. (seem to be a problem in virtio-net driver > in 3.2) > > > Do you known exactly where the packet is lost ? (do you have used tcpdump on > tap interface too ?) > > mtu size is enough big on bridge && taps vs mtu in your vms ?
currently i can't reproduce the issue - even i was for two days. Currently i've no idea what has happend and will report back if it happens again. Thanks! Greets, Stefan > > > ----- Mail original ----- > De: "Stefan Priebe, Profihost AG" <s.pri...@profihost.ag> > À: "pve-devel" <pve-devel@pve.proxmox.com> > Envoyé: Mardi 22 Août 2017 08:04:18 > Objet: [pve-devel] lost tcp packets in bridge > > Hello, > > while running PVE 4.4 i'm observing lost tcp packets on a new cluster. > Two VMs are connected to the same bridge on the same host using virtio > and linux as a guest. > > But the target guest does not receive all tcp packets some get lost. I > see them leaving on the source using tcpdump but they do not arrive at > the target network card (checked using tcp dump). This results in > sometimes awfully slow performance as tcp retransmits happen. > > I already flushed all iptables rules - but this did not help. I can't > reproduce the issue it just happens "sometimes" with some packets. > > Has anybody already ovserved something like this? > > Greets, > Stefan > _______________________________________________ > pve-devel mailing list > pve-devel@pve.proxmox.com > https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel > > _______________________________________________ > pve-devel mailing list > pve-devel@pve.proxmox.com > https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel > _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
