When I switched to looking at the performance of the more advanced RIO server designs that use IOCP it quickly became apparent that even multiple 1 Gigabit connections weren’t enough of a challenge to give me any meaningful figures; my traditional IOCP datagram servers were easily able to keep up and increasing the workload per datagram required such high workloads that the tests became meaningless. So, we’ve brought forward the purchase of the hardware that we intended to use for our private cloud scalability testing and we now have 2 Intel 10 Gigabit AT2 cards. Switch prices are still prohibitive for lab use and so these two cards are directly connected, point to point.
The good news is that we now have a 10 Gigabit network link between two of our test servers. The bad news is that I now have to work out how to use it, the traditional datagram generation program that I was previously using to test simply doesn’t scale to saturate the new link.