Hi, I have observed high rates of packet loss when using OVS to "forward" packets to a GRE or VXNET port. This packet loss does not occur to anywhere near the same extent when OVS is used to "forward" packets to a port that does not use tunnelling.
The attached graph loss.pdf illustrates this. It appears that loss starts at around 500,000pps and increases quite rapidly at that point. I have also graphed CPU utilisation on the "forwarding" machine. However it does not seem to be very enlightening. I have not poked at the code to investigate why this may be occuring and I am posting to see if this is a known problem.
loss.pdf
Description: Adobe PDF document
cpu.pdf
Description: Adobe PDF document
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