Proxmox Slow Network Speed Reddit. However, I have tested the download speed on Ubuntu and Debian

However, I have tested the download speed on Ubuntu and Debian installed on the same server and achieved speeds of 1100Mbps. Is there a way to reset the network config inside of TrueNAS? I've set up a new, and clean TrueNAS VM, and network works fine there. My router hosts my vpn server (wireguard) and has a 8G wan with 8G subscription. 04. 4 and now network speeds in my VM's is very very slow, anyone else noticing this? Saw there were some updates this morning for Proxmox so I updated to 8. 4 and now network speeds in my VM's is very very slow, anyone else noticing this? I was in the middle of copying data on my network using a program in a windows VM to copy data between two hosts on my network, was getting 100MB/s speeds before the upgrade now I am getting Proxmox VM's have unbelievably slow network speed up/down when connected to VPN. Since I have a good speed download on Ubuntu it's not a hardware but Proxmox related. However in Proxmox I can't get above 150 Mbps (using the speedtest-cli tool). 2 NIC, linux bond, balance-alb. In your case , what I would do to increase the speed is to move the PBS transfer network to a separate network on cards with speeds higher than gigabit or alternatively , if you have availability of network ports , do a link aggregation. 16 Mbps Given this configuration, what could be causing the slow speed connection Thank you in advance for your help. TLDR: NAS Container reads/writes to clients at full network speed, but can't read/write the same files to the other NAS at full network speed. Jul 25, 2025 · The Problem: Speed Test Results Speed test from Proxmox Host: Download: 9351. Truenas was also reporting 40Gb Media in its interface description. This is my default for LXC container with it's data stored on a zfs volume, running on consumer HDDs/SSDs*. 59 votes, 12 comments. Details: Proxmox VE 8. How does proxmox find the destination IP on the migration network, if I only have to give a network and a mask? Could it work to resolve to different IPs (assuming, proxmox somehow uses the hostname to find the correct IP in the migration network)? Any other ideas? It would be really sad to do without a fast migration network because of one host! Great speed download : 730 Mbps / 680 upload I tried with Proxmox : Slow network speed on Proxmox VE direct NIC and VMs I tried with Windows : Great network speed on Windows and slow network speed on every environnement in Vmware in bridge (debian / ubuntu) Intel VT-x is activated in my BIOS and the BIOS is updated to the latest version. I have 4 VMs on my proxmox host 1 of which is primarily used for downloading "Linux ISOs". I have two virtual machines, the first one is running Debian 12, and the other Ubuntu 22. I recently ran into a throughput issue on my network (speed auto-negotiation failure) and it got me thinking: Am I getting my best speed? Proxmox… The network link on the backup target is kinda slow, and it is causing a slow backup overall, but this doesn't explain why the VM's disk I/O is throttled because a snapshot is taken at the start of the backup job. To achieve a certain network connection speed both end points and all the hops in between need to support at least this speed. x Guest: Ubuntu 24. Also network performance through iperf3 is around 7Gbps which is good and acceptable. Please help. My PBS has two network card, one connected to the network and one directly to the NAS. 2 on two different types of PC and I'm having the same issue. 5 minutes, but uploading moves around 8mbps / 0. Nov 14, 2023 · I ran ethtool {devicename} in a shell for proxmox, and it showed the "speed" parameter as 40000. I have followed pretty much all the basics of the installation, following "homenetworkguy" videos. For example; If i download something on host, its downloading in 110MB/s (normal speed) - but if i download from VM, it's downloading in 10MB/s. I've found various (more or less dated) github repos where exactly that is described. Nov 7, 2024 · After installing Proxmox VE, you may notice that the network speed is stuck at 100Mb/s, even though your network card is capable of 1000Mb/s. I get between 12-20Gb using iperf between a VM and truenas depending on which side is the client/server so I know it's not network related. Cpu isn't spiking so I've narrowed it down to proxmox. 04 LTS Network: Virtio (paravirtualized) MTU currently 1500 (tried raising to 6000 Feb 26, 2022 · Hi All, I've been digging through the forums and posts I have an issue with slow network performance from VM1 to host2 which doesn't host the VM. But consider the results to be the same, except a much higher speed with compression. I also have an Azure VM created from… I am new to Proxmox. Jun 27, 2025 · Hi there, i'm configuring a new Proxmox Server (INTEL(R) XEON(R) GOLD 6544Y, 384 GB RAM, 2x 10Gbit NIC) and run into a problem with the network speed between VMs and VMs accross the network to other devices.

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