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Transfer speed issues on new Proxomox 8.3 setup (lemm.ee)

submitted 22 hours ago* (last edited 22 hours ago) by CmdrShepard42@lemm.ee to c/selfhosted@lemmy.world

20 comments fedilink hide all child comments

I recently posted about upgrading my media server and migrating off Windows to Proxmox. I've been following an excellent guide from TechHut on YouTube but have run into issues migrating my media into the new Proxmox setup.

Both my old Windows machine and new Proxmox host have 2.5Gb NIC cards and are connected together with a 2.5Gb switch and running on the same subnet. Following the guide, I've created a ZFS pool with 7x14TB drives and created an Ubuntu LXC which is running Cockpit to create Samba shares.

When transferring files from Windows, I'm only seeing 100MB/s speeds on the initial transfer and every other transfer after that caps out at >10MB/s until I reboot the Cockpit container and the cycle completes.

I'm not very knowledgeable on Proxmox or Linux but have run an iperf3 test between Windows > Proxmox and Windows > Cockpit container and both show roughly 2.5Gb transfer speeds yet I am still limited when transferring files.

Googling the issue brings up some troubleshooting steps but I don't understand a lot of it. One fix was to disable IPv6 in Proxmox (I dont have this setup on my network), which was successful, but didn't fix anything. I no longer see the interface when doing an 'ip a' command in Proxmox, though I do still see it when doing it in the SMB container.

Does anybody have any experience with this that can offer a solution or path toward finding a solution? I have roughly 40TB of media to transfer and 8MB/s isn't going to cut it.

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[–] Xanza@lemm.ee 5 points 21 hours ago (2 children)

Does the Proxmox host have the driver installed for your 2.5Gb NIC? Can't use it if it's not installed. Connect to the host and run ethtool <device>. Should show the link speed as Speed: .

I have roughly 40TB of media to transfer and 8MB/s isn’t going to cut it.

If you need ultra-speed data, why not do a 100GbE switch with JBOD? 40TB isn't a small amount of data. Generally no matter what setup you have it's going to take a significant amount of time to swap data here.

[–] CmdrShepard42@lemm.ee 1 points 21 hours ago

I haven't installed any drivers on the Proxmox machine. That one has the 2.5Gb NIC built into the motherboard so I probably misspoke when I called it a "card" in the OP if that makes a difference. I'll try this when I get home but I have run 'lspci' and it shows the NIC on both the host and container (Intel Killer 3100 2.5Gb though it's listen as Killer 3000 2.5Gb) plus my iperf3 tests were showing ~2.3Gb speeds between both machines and the container.

As far as the 100GBe switch, I only need to transfer the media off the old machine once so I was just trying to go with something inexpensive since the standard 1Gb ethernet should be fine for most things after this initial transfer.

[–] possiblylinux127@lemmy.zip 0 points 19 hours ago (1 children)

Linux doesn't have drivers like Windows does. The kernel either supports the hardware or it doesn't.

[–] Xanza@lemm.ee 6 points 16 hours ago

This is categorically untrue. The kernel includes most open source drivers however it does not include proprietary drivers (or even all open source drivers) which require recompiling the kernel itself or installing secondary headers...

I've used many networking cards in the past that required you to recompile the kernel for them to work properly...