.NET GC Server-Background-GC
Garbage Collection and Performance
https://msdn.microsoft.com/en-us/library/ee851764(v=vs.110).aspx
https://channel9.msdn.com/posts/Maoni-Stephens-CLR-45-Server-Background-GC
https://blogs.msdn.microsoft.com/maoni/2011/09/21/so-whats-new-in-the-clr-4-5-gc/
https://blogs.msdn.microsoft.com/salvapatuel/2009/06/10/background-and-foreground-gc-in-net-4/