JIT-compiled output

[Gilles Ganault]

Hello

I'm learning about .Net, and was wondering about what happens
with the JIT-compiled EXE.

The first time I run my little "Hello, world!" sample, it's a bit
slow, but if I run it again, it's as fast as a VB Classic program.

If that is indeed due to JIT, where does Windows keep the compiled
version: In RAM? In a temporary directory? If the latter, is the
JIT-compiled output kept until the user logs off?

Is there a way to distribute a compiled version of my VB.Net app, so
that performance is as good as my VB Classic apps, even the first time
users launch it?

Thank you.

 

[Jon Skeet [C# MVP]]

I'm learning about .Net, and was wondering about what happens
with the JIT-compiled EXE.

The first time I run my little "Hello, world!" sample, it's a bit
slow, but if I run it again, it's as fast as a VB Classic program.

If that is indeed due to JIT, where does Windows keep the compiled
version: In RAM? In a temporary directory? If the latter, is the
JIT-compiled output kept until the user logs off?

No, that's not the JIT - it's just that the second time you load it,
all the .NET framework libraries etc are in the in-memory disk cache.

 

[Bob Powell [MVP]]

As John suggests you are not really seeing the benefits if JIT compiling
here. However if this subject interests you, see this article on my site...
http://www.bobpowell.net/prejit.htm

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[Gilles Ganault]

As John suggests you are not really seeing the benefits if JIT compiling
here. However if this subject interests you, see this article on my site...
http://www.bobpowell.net/prejit.htm

Thanks. I'll take a look.