[SOLVED] Virtualised PMG issues with TCP Offloading

[zolthar]

Hi have a PMG on a Hyper-V Host and found that the upload is highly limited to 15 mbps when downloads are around 900+ mbps.

I have to run this line which fixes the problem:

sudo ethtool -K eth0 gro off gso off tso off lro off

This fixes the slowness and uploads becomes the same speed as download. However after reboot sometimes and definitely after updates it reverts and I need to run the above again which fixes it.

Is there a way I can either:

1. Make this change permanent even after reboots/updates; or
2. CRON to run this on every reboot regardless of updates; or
3. Another thought that is better?

 

[dcsapak]

should be possible to do in the network config (/etc/network/interfaces) in the 'post-up' part of the respective interface
see https://wiki.debian.org/NetworkConfiguration for details on that config file

 

[zolthar]

That is perfect - thank you heaps.