Everyone has probably dealt with an annoying performance issue at some point or the other. Performance optimization is a hard problem and we could sure use some help from you. We have a survey posted at the CLR and Framework Performance blog over here. The survey contains questions assessing your level of satisfaction specific to .Ne...

And the videos keep coming in! We have Shawn Farkas who works on the security model, talking about the new managed security model. Check out the video here. And then we have Surupa Biswas, from the CLR Code Generation team, talking about the new Targeted Patching work in CLR 4. The link to the video is here.

Surupa Biswas has a post in the CodeGen team blog on new features in NGen coming out as part of CLR 4. The post covers NGen SxS (that's side-by-side) and multi-proc NGen, and goes into detail on the work that went into making Targeted Patching possible. Read the post here.

We have more Channel 9 videos from the CLR team for your enjoyment! The Base Class Libraries (BCL) team talks about some of the new features in the next version of BCL over here. We have Maoni Stephens and Andrew Pardoe talking about Background Garbage Collection over here. The CLR Debugger team talks about new debugging and profiling enhancemen...

A couple of weeks back my PM and I did a channel9 video on Background GC. Take a look: https://channel9.msdn.com/shows/Going+Deep/Maoni-Stephens-and-Andrew-Pardoe-CLR-4-Inside-Background-GC/

In this post we will talk about the effects of a particular security enhancement in CLR 4.0 Beta 1 and how it affects working with AJAX Control Toolkit in Visual Studio 10 Beta 1 and possibly other 3-rd party assemblies. The security enhancement in question is the way CLR 4.0 treats assemblies that came from a remote source (e.g., downloaded from ...

Now that .Net 4 Beta1 is out, you'll see a number of posts on this blog covering new CLR features in CLR 4. Grant Richins, a developer on our team, wrote a post on tail call improvements in CLR 4 at the CLR Code Generation blog. The post deals with JIT ETW Tracing in .Net 4 and specifically covers new ETW events exposed by the JIT. Prior ...

The public release of Visual Studio 2010 Beta 1 is now available and can be downloaded here. This is one of the most compelling updates to Visual Studio we’ve seen in years.  The entire IDE has been refreshed with a new look and all the code editors including the HTML and ASPX editors have replaced with a new extensible editor based on WPF....

Vance Morrison, a CLR architect, recently gave an interview to Channel 9 where he walks through the history of the CLR (he's been on our team since it's very beginning), the upcoming version, his favorite features in CLR v4, and what the future looks like. He also talks about concurrency (and the role that CLR plays), aspects of...

The Dynamic Language Runtime allows you to implement a dynamic language (such as Ruby or Python) on top of the CLR. There are a lot of challenges to making everything work right. One particularly difficult aspect was enabling Ruby to attach arbitrary "properties" to instanced .NET managed objects at runtime. If a Ruby developer sets an instance var...