This is a follow-up post for JIT ETW tracing in .NET Framework 4 . These are some of the possible strings that might show up in the FailReason field of the MethodJitTailCallFailed event. These are reasons that come from or are checked for by the VM (as...

This is article 4 of 4 in the NGen: Walk-through Series . The NGen technology is designed to be used during the installation phase of a managed application or library. This article will talk about the various installer technologies available, which one...

This is article 3 of 4 in the NGen: Walk-through Series . This article is part of a series of blog posts intended to help managed code developers analyze if Native Image Generation (NGen) technology provides benefit to their application/library. NGen...

This is article 2 of 4 in the NGen: Walkthrough Series . This article is part of a series of blog posts intended to help managed code developers analyze if Native Image Generation (NGen) technology provides benefit to their application/library. NGen refers...

This is article 1 of 4 in the NGen: Walkthrough Series . Hey there managed code developer. So you’d like to test drive the NGen technology in the .Net Framework? This article will walk you through how to use NGen for your existing solution in Visual Studio...

Now that Microsoft Visual Studio 2010 has shipped, we thought it would be a good time to publish a series of articles focused on how to use the NGen technology and how to measure performance benefits from it. This series features hands-on style content...

This is a follow-up post for JIT ETW tracing in .NET Framework 4 . These are some of the possible strings that might show up in FailReason field of the MethodJitInliningFailed event. These are reasons that come from or are checked for by the VM (as compared...

Introduction One argument often made by those who dislike managed code is along the lines of “managed code can never be as fast as native code, because managed code has to do array bounds checks.” Of course, this isn’t precisely true – it would be...

First a little background reading before going into tail call improvements in CLR 4 - David Broman did an excellent job at covering the basics in his post here: http://blogs.msdn.com/davbr/archive/2007/06/20/enter-leave-tailcall-hooks-part-2-tall-tales...

If you care about performance at a very low level, at one point you’ve asked yourself why the compiler, JIT, or runtime did or did not inline a certain method. Unless you worked on the compiler, JIT, or runtime, you really had no way of telling, other...

.NET Framework 4 is our first release since we shipped FX 3.5 SP1 (FX 4 beta 1 is now available here: http://msdn.microsoft.com/en-us/vstudio/dd582936.aspx ). FX 3.5 SP1 contained major changes to NGen – features that improved startup performance, security...

Long time, no blog. Since the NetFX 3.5 Service Pack is available, now, I figured I’d put up a quick rundown of what we (the CLR CodeGen team) contributed to the package. I’m not going into nitty-gritty details, but just to give you an idea of what...

I was recently shown the following code and asked why the loop calling SafeAccess executed significantly faster than the second loop calling UnsafeAccess : static int [] intarray = new int [ 5000 ]; static void SafeAccess(int a, int b) ...

By Fei Chen How are value types implemented in the 32-bit CLR? Value types are the closest thing in the common language runtime model to C++ structures. An instance of a value type is simply a blob of data in memory that contains all the fields...

by Brian Sullivan In Visual Studio you can set a breakpoint at any line in your source code. When you run your program Visual Studio will break and stop execution when it reaches your breakpoint. At this point you can right click on your source...

I work in the CodeGen test team and wanted to share a recent customer experience that was related to ngen. One of our Customer Service and Support (CSS) engineers in France contacted us regarding an installation delay with the latest Microsoft Exchange...

One of the topics we often get questions on is about when it makes sense to invest the extra effort to pre-compile assemblies via NGen instead of simply relying on the JIT compiler to generate native code on the fly at application runtime. I thought I...

This is the first blog post from the code generation feature team working on the Common Language Runtime (CLR). We're the group of individuals that make it possible to generate native code for all binaries that run on top of the Microsoft .NET Framework...