I recently re-read this article and can confirm that it's excellent—not just this specific page, but all the other sections under "Garbage Collection" as well.

If you want to dive deeper into memory performance analysis in .NET, this is another must-read: https://github.com/Maoni0/mem-doc/blob/master/doc/.NETMemory...

It was written by Maoni Stephens, the architect of .NET's garbage collection.