Re: Poor performance of ingress filter for separate VMs

Linux Advanced Routing and Traffic Control

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Neil Aggarwal wrote:
Andy:

turn off any sort of offload for the virtual device with ethtool and see
if that helps.

When I go to the host and type:
ethtool -k v1262

It gives me this output:

Offload parameters for v1262:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: on

Any other ideas?

Ahh, tso will also need to be turned off if you want to see normal/real sized packets.

I don't know if it will help your specific problem, but generally now I see it's on for virtual devices I think turning off will be better than using a large mtu with policers just to to avoid dropping too much at once.

If it doesn't help then see what's going on with tcpdump.


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