intel 226-v download speed issues
- Thread starter nitrup
- Start date
We have a saying in German.
Wer misst, misst Mist.
Who measueres, measures crap.
Maybe just your ISP? What speeds do you get by using iperf3 to another 2,5GBit/s host in your network?
I've seen that before, usually with USB3 NICs. More than likely it's the driver.
I've had 0 issues with Intel I225-V
What kernel version are you on?
I've had 0 issues with Intel I225-V
What kernel version are you on?
I don't think so; his local Proxmox test appears normal @ 2.34 GBS. So the NIC is behaving correctly.
I would suppose his Internet (public) download, could somehow be being throttled by other downloads (from that node/guests) at the same time. Many routers balance Internet loads across their clients. Possibly his router, is dividing ISP bandwidth per NIC port.
The OP could also repeat speedtests at different times of the day/week & compare results.
Since you get 2,5Gbit locally, I think your NIC is fine.
Wer misst, misst Mist.
My best guess is something with iperf being single threaded.
Wer misst, misst Mist.
My best guess is something with iperf being single threaded.
Linux proxmox 6.8.12-9-pve #1 SMP PREEMPT_DYNAMIC PMX 6.8.12-9 (2025-03-16T19:18Z) x86_64 GNU/Linux
Try opt-in kernel 6.11 or 6.14, make sure you have a full backup to revert to if needed
Also make sure you're installing iperf3 from source, you want iperf3 3.16 -- the one provided with debian repos (3.12) is a little old
Also make sure you're installing iperf3 from source, you want iperf3 3.16 -- the one provided with debian repos (3.12) is a little old