When downloading large files pfSense stops responding with high CPU usage

GaZaai · Apr 25, 2023, 8:49 PM

Hi,

When I download large files, for instance a steam game. Sometimes my pfSense stops responding and has high CPU usage 40-50% within Hyper-V.

To get it back to normal I have to go into control panel and disable/enable a network adapter.
Then it comes straight back.

What settings in pfSense can I enable to try and log this issue to find what the problem might be.

Thanks

Dobby_ · Apr 25, 2023, 8:49 PM

@gazaai

It seems for me that there is something running full!?
Or are there other packets installed such squid & clamav?

GaZaai · Apr 26, 2023, 9:18 PM

@dobby_ I think I might have narrowed it down to an issue with the Intel I226-V ethernet controllers my mini PC has. Ended up disabling the offloading options within the driver settings-

IPv4 Checksum Offload
Large Send Offload V2 (IPv4)
Large Send Offload V2 (IPv6)
TCP Checksum Offload (IPv4)
TCP Checksum Offload (IPv6)
UDP Checksum Offload (IPv4)
UDP Checksum Offload (IPv6)

The issue hasn't came back yet, so hopefully that might be it fixed.

found the potential fix here

Thanks,
Gary