Windows 8 Registered I/O Performance - 10 Gigabit networking...

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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.

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This link, Revisiting Network I/O APIs: The Netmap Framework, via makes for interesting reading. Especially given my current interest in the performance of the Winsock Registered I/O networking extensions, RIO, and the fact that my... Read More

I'm still working on my investigation of the Windows Registered I/O network extensions, RIO, which I started back in October when they became available with the Windows 8 Developer Preview. I've improved my test system a little since I... Read More

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I usually write about the development of The Server Framework, a super scalable, high performance, C++, I/O Completion Port based framework for writing servers and clients on Windows platforms.

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