How does protobuf-net achieve respectable performance?

Question

I want to understand why the protocol buffers solution for .NET developed by Marc Gravell is as fast as it is.

I can understand how the original Google solution achieve

Answer 1

Its performance very good!

You can see a comprehensive comparison between different formats including protobuf done by me- http://maxondev.com/serialization-performance-comparison-c-net-formats-frameworks-xmldatacontractserializer-xmlserializer-binaryformatter-json-newtonsoft-servicestack-text/

This comparison includes large and small data samples and different formats.

One of the tests in my post-