Small and fast .NET programs? - 65% runtime in ResolvePolicy

Question

Hi,

I tried to build a very very small .NET app in F#.

It just has to convert a small string into another string and print the result to the console like:

convert.exe myString ==> prints something like "myConvertedString"

I used dottrace to analyze the performance:

• 26% (168ms) in my actual string conversion (I thinks this is ok.)
• 65,80% (425ms) in ResolvePolicy in System.Security.SecurityManager

A runtime > 500ms on every execution is way too slow. Can I do something to improve this?

It would be Ok if only the first call needs this time.

Regards, forki

Answer 1

You could use caspol.exe to turn code access security check off.

Answer 2

Do you definitely have to run this as a separate process for each string?

Could you pass in the name of a file containing a lot of strings? That would be significantly more efficient, in terms of:

• Time taken to bring up a process
• Time taken to load all the various bits of .NET
• Time taken to JIT your code
• Time taken to resolve the security policy

Answer 3

you could try to precompile the assembly. with the program ngen it is possible to compile a .net assembly already to machine code, and then to install the assembly in the global assembly path. that should speed up the loading time of the application