On 2015-10-22, at 9:38, Eggert, Lars <l...@netapp.com> wrote: > for those of you following along, I did try jumbograms and throughput > increases roughly 5x. So it looks like I'm hitting a packet-rate limit > somewhere.
Does the ixl driver have an issue with TSO/LRO? If I tcpdump on the receiver when testing the 10G ix interfaces, I see that most "packets" are up to 64KB in the traces on both sender and receiver, which is expected with TSO/LRO. When I look at the traffic over the ixl interfaces, I see that most "packets" on the sender are much smaller (~2896 aka 2 segments; although some few are >40K). On the receiver, I only see 1448 byte packets. Lars
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