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Re:Introducing Bing Code Search for C# by kevinskii on Monday February 17, 2014 @04:46PM (#7254692)
We stopped using Mono after a few months. With .NET's Task Parallel Libraries we saw an enormous performance difference between Mono/Redhat vs. .NET/Windows, with the latter often running many times faster. Tuning the GC and heap size didn't make much of a difference.

.NET seems to be well worth the cost of running Windows, but the consequent platform and vendor lock-in is still a concern for us.

Re:Introducing Bing Code Search for C# by kevingadd on Monday February 17, 2014 @07:27PM (#7255479)
Mono's parallel implementation is really bad, yes. I've had similar problems with it (despite the fact that the Mono SGen GC is usually pretty decent at keeping up)

Maybe you should contribute a better one. ;)