问题
Is there any change in .Net 4.0 garbage collector execution?
回答1:
Here's a blog posting:
http://geekswithblogs.net/sdorman/archive/2008/11/07/clr-4.0-garbage-collection-changes.aspx
and
http://www.infoq.com/news/2009/06/Background-Collector
回答2:
There is also AppDomainResourceManager feature, which allows you to track resource usage ( Memory and CPU ) per appdomain. the GC part of this feature is the ability to get per appdomain memory tracking.
回答3:
There's also an ephemeron implemenation using a new class called System.Runtime.CompilerServices.ConditionalWeakTable which is detailed here.
This is useful for collecting dynamic languages which allow setting arbitary "properties" on arbitrary instances.
回答4:
Yes, lots.
My latest book Visual F# 2010 for Technical Computing includes a lot of performance-related information about .NET 4 as well as F# itself and the performance measurements and advice are quite different with .NET 4 and the new background garbage collector. In many cases we're seeing substantial performance improvements but there are some slowdowns as well.
回答5:
Also, check out the blog of the developer who works on the GC, where there is an article about the new GC, plus a link to a Channel 9 interview regarding the .NET 4.0 GC.
来源：https://stackoverflow.com/questions/1156844/garbage-collection-in-net-4-0