Hi all,
I am currently running Proxmox 8.2.7. It is installed on an HP Elitedesk 800 G6 with an Intel i225 proprietary NIC installed. In all my VMs, I am using the VirtIO NIC.
When running iperf3 tests or SMB & SFTP transfers between VMs on the same VLAN, I see speeds of ~30 Gb/s.
Transfers between VMs on different VLANs result in a bottleneck of around 500-600 Mb/s. It is important to note that I have a 2.5 Gb/s capable switch, and my router is as well.
I know this problem resides with Proxmox, because transfers from the Proxmox host itself to another 2.5 Gb/s -capable machine on the network will actually saturate the NIC with 0 retries in iperf3.
The problem only exists when transferring from a VM within Proxmox. I have my VLANs configured on the Proxmox host using Linux bridges.
Is there anybody else out there with this problem? I know I have a common NIC and a popular homelab PC with the Elitedesk. I have located another forum post where others are discussing the issue from last year. It is linked: here.
Any feedback would be great. I've put in hours of work investigating the issue to no avail. I've tinkered with ethtool settings, different virtual NICs, you name it. I fear it is a kernel issue.
Thank you
I am currently running Proxmox 8.2.7. It is installed on an HP Elitedesk 800 G6 with an Intel i225 proprietary NIC installed. In all my VMs, I am using the VirtIO NIC.
When running iperf3 tests or SMB & SFTP transfers between VMs on the same VLAN, I see speeds of ~30 Gb/s.
Transfers between VMs on different VLANs result in a bottleneck of around 500-600 Mb/s. It is important to note that I have a 2.5 Gb/s capable switch, and my router is as well.
I know this problem resides with Proxmox, because transfers from the Proxmox host itself to another 2.5 Gb/s -capable machine on the network will actually saturate the NIC with 0 retries in iperf3.
The problem only exists when transferring from a VM within Proxmox. I have my VLANs configured on the Proxmox host using Linux bridges.
Is there anybody else out there with this problem? I know I have a common NIC and a popular homelab PC with the Elitedesk. I have located another forum post where others are discussing the issue from last year. It is linked: here.
Any feedback would be great. I've put in hours of work investigating the issue to no avail. I've tinkered with ethtool settings, different virtual NICs, you name it. I fear it is a kernel issue.
Thank you