Slow network speed when writing data to PVE host/vm

[Nusu]

When I copy data to my proxmox host or to a VM it copies only at 30MB/s max.
I tried moving data between VM's and containers and here I get the normal speed of my disks/ssd's.
When I copy data from the host to my pc I get the full speed (111MB/s) so I only have the issue when moving data to the host.
My host is a minisforum MS-01 and I have this issue both when copying to my internal SSD's and to external storage connected to it with a pcie adapter.
Does anyone have an idea what is causing this?

 

[_gabriel]

is VM vDisk stored on ZFS ?

 

[Nusu]

is VM vDisk stored on ZFS ?

Yes

 

[_gabriel]

ZFS require datacenter drives to except better performance + will wearout quickly your drivers because of write amplification.

 

[Nusu]

The drives I'm using are 12TB Seagate enterprise capacity helium drives, so those should be fine.
I also have the issue when I just connect a single drive or SSD.

 

[Kingneutron]

Test network speed in both directions with iperf3 (needs to be installed on both ends, and one side needs to be listening)

e.g.

iperf3 -c 172.16.25.189


iperf3 -c 172.16.25.189 -R

 

[_gabriel]

try with lvmthin instead zfs

 

[Nusu]

Test network speed in both directions with iperf3 (needs to be installed on both ends, and one side needs to be listening)

e.g.

iperf3 -c 172.16.25.189


iperf3 -c 172.16.25.189 -R

Here is the output when ran on the proxmox server:

 

[Nusu]

try with lvmthin instead zfs

Just tried it and it is the same, even a couple MB/s slower than on the ZFS pool.

 

[Kingneutron]

Here is the output when ran on the proxmox server:
View attachment 68758

View attachment 68759

Incoming speed is terrible, and do you see those Retries on the 2nd pic? 289,53,16... This looks like a network issue, could be the kernel module driver or cabling or port on the switch.

 

[Nusu]

Incoming speed is terrible, and do you see those Retries on the 2nd pic? 289,53,16... This looks like a network issue, could be the kernel module driver or cabling or port on the switch.

Incoming speed is terrible, and do you see those Retries on the 2nd pic? 289,53,16... This looks like a network issue, could be the kernel module driver or cabling or port on the switch.

I tried a different port, cable and switch and nothing changed. Can I replace the driver somehow with a different version to test if this resolves the issue?

 

[Kingneutron]

About the only thing you can do is try a different kernel, possibly compile an updated driver from source (not recommended), or replace the NIC with a better-supported model. Intel is usually a good bet unless it's certain 10Gbit models, those are broken in proxmox kernel 6.x

What is the output of ' lspci |grep -i ether '?

 

[Nusu]

Here is the output:

 

[Kingneutron]

https://forum.proxmox.com/threads/intel-nuc13-pro-slow-nic-speed-i226.140554/

https://duckduckgo.com/?q=proxmox+intel+i226+speed&ia=web

I would encourage you to search for an existing bug report on the proxmox bug tracker, update if exists, or file a new one.