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Tried on my homelab (Zen 2), no problem, cpu usage is lower but consumption remains (my hopes where here) the same.

Hi, i have similar configuration (freebox delta server) but vyos and PCIe passthrough instead pfsense , could you try to turn your freebox into bridge mode instead router mode? my resuls from one VM : curl -L -k -o /dev/null http://mafreebox.freebox.fr//gen/10G % Total % Received % Xferd...

Hi, i've somewhere same server specs as you and no problem for me. May be a PSU related problem ? 3900X + 64 ECC + asrock rack x570d4u 1 PCIE HBA+ 1 PCIE Intel x710 Nic

Hi, all in documentation of proxmox. https://pve.proxmox.com/wiki/Network_Configuration

Hi, try to add "-P 3" to your iperf command.

Hello, with Intel X710 DA2 NIC, and enabled sr-iov and intel nic virtual function i can reach ~40 Gbits between 2 VMs without hammering my AMD 3900X CPU (It reduces overhead of guests too), with normal linux bridge you will be limited by your host's CPU.

Hi, IOMMU=pt is for device virtualizing (like NIC or GPU) with a better passthrough. kvm_amd.npt=1 && kvm_amd.avic=1 is for AMD specific optimization on KVM. (no proof of gain) nmi_watchdog=0 is for disable linux watchdog since my system has hardware watchdog mitigations=off is for disable...

Working good on my system with AMD 3900X (ondemand governor) on X570 system with IOMMU and SR-IOV. Using last i40e and iavf drivers Command line: BOOT_IMAGE=/boot/vmlinuz-5.15.30-2-pve root=/dev/mapper/pve-root ro quiet amd_iommu=on iommu=pt kvm_amd.npt=1 kvm_amd.avic=1 nmi_watchdog=0...

You can compile latest intel (i40e) drivers easily under proxmox, i done it without problem for x710-da2, i got same message before drivers update. Same thing for iavf drivers. Note you could need to upgrade to latest nvm firmware (8.40 currently) too.

Hi, i'm running Proxmox Virtual Environment 6.3-2 (5.4.73-1-pve) and the command running fine on my sr-iov setup, (Intel X722 Nic)