What is the latency of IP over Infiniband compare with 10Gbps fibre network? What is the latency of IP over Infiniband compare with 10Gbps fibre network? 10Gbps network is something like a Solarflare low latency NIC card. How well does IP over IB perform not just throughput but latency?

Found this page: < (undated)

It compares 56G Infiniband to 40G and 10G Ethernet - apparently NICs/HBAs only, but you can get the basic idea.

Also, < (from 2009) states that 10GE has 5-6 times the latency of IB.

However, Ethernet latency can vary greatly with the specific switches used and (obviously) the number of hops required. Even the cable matters as 10GBASE-T has appr. 1.5 μs additional latency in comparison to 10GBASE-R due to additional encoding. Finally, the hardware generation has some significance as NIC latencies have progressively decreased over time.