I have got some results from testing with the .NET framework 1.1 beta, both in a native 1.1 environment and a mixed 1.0 and 1.1 environment. Note these are all results from comparing TCP and HTTP remoting channels, not web service, which also use HTTP transport, but are hosted in IIS.
Running locally on a .NET framework 1.1 beta >TestChannels -client Connecting to localhost Testing TCP Channel Done with RegularMethod batch! 3.688 Done with RegularMethodReturn batch! 3.844 Done with OneWay batch! 2.969 DONE Testing TCP Channel Testing HTTP Channel Done with RegularMethod batch! 13.219 Done with RegularMethodReturn batch! 13.593 Done with OneWay batch! 16.485 DONE Testing HTTP Channel Interestingly here the TCP channel and the HTTP channel are slightly faster than under 1.0. The [OneWay] TCP channel has made great improvements and is now faster than the regular method (as it should be). But the HTTP channel's [OneWay] method is going backwards, now it is not only slower under 1.1 than it was under 1.0, but it is now slower than the regular methods. Running with a client on a .NET framework 1.1 beta and the server running on a .NET framework 1.0 sp2. >TestChannels -client=hebe Connecting to hebe Testing TCP Channel Done with RegularMethod batch! 3.093 Done with RegularMethodReturn batch! 3.266 Done with OneWay batch! 11.421 DONE Testing TCP Channel Testing HTTP Channel Done with RegularMethod batch! 10.578 Done with RegularMethodReturn batch! 10.906 Done with OneWay batch! 4.422 DONE Testing HTTP Channel Again the across machine version of the tests runs faster than the local across process tests, however the results are more pronounced. The HTTP channel is nearly 3 seconds faster than locally on the same machine. The TCP [OneWay] call is still slow 2.9 seconds locally => 11.4 seconds across the network, but at least it is not the 86.3 seconds it used to take! The HTTP [OneWay] methods are running twice as fast in this combination as previously in a 1.0 to 1.0 networked config. Running with the client on .NET framework 1.0 sp2 and the server running on .NET framework 1.1 beta. >TestChannels.exe -client=cupid Connecting to cupid Testing TCP Channel Done with RegularMethod batch! 3.766 Done with RegularMethodReturn batch! 3.984 Done with OneWay batch! 8.203 DONE Testing TCP Channel Testing HTTP Channel Done with RegularMethod batch! 11.829 Done with RegularMethodReturn batch! 12.421 Done with OneWay batch! 9.688 DONE Testing HTTP Channel With the client running on the old 1.0 framework we loose some of our speed shown above. However the [OneWay] methods are again showing interesting results. The TCP channel methods are faster! But the HTTP methods are slower! It looks like the 1.1 framework will make some positive speedups to the remoting layer, but what is going on with those OneWay methods? You can read messages from the Advanced DOTNET archive, unsubscribe from Advanced DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com.