WCF vs. .Net Remoting

Question

according to this article, WCF with named pipes is the best choice for IPC, and it is around 25 % faster than .Net Remoting.

I have the following code that compares WCF

Answer 1

The MSDN article you refer to at the start of your question compares Remoting with WCF NetNamedPipes as an IPC mechanism (meaning Inter-Process Communication, not Intra-Process Communication). Your test code is comparing performance for communication within the same process.

It is my understanding that WCF's designers had a goal of substantially beating all pre-existing remoting technologies for performance, in all cross-network and cross-process scenarios, but not necessarily cross-domain within the same process. In fact I think they have got fairly close to Remoting performance in the cross-domain scenario too, as other answerers have indicated. But you should not be surprised if you don't get a performance gain from using WCF in this particular scenario.

It is not a reason to doubt WCF's superior performance for Inter-Process Communication.