Managed Code Performance

Today I read a very good article from a guy who works for Microsoft BCL Performance section. I found some good interesting concepts. If your interested about code performance you should read this article.

http://blogs.msdn.com/ricom/

I wrote a very simple performance test for testing the for vs foreach & string vs stringbuilder ..etc..etc.. you can find the code below.

Timer class: This calculates the code execution time.

///

/// To get the elapsed the time

///

public class MyTimer

{

long _start;

long _end ;

long _exeTime ;

public string ElapsedTime

{

get

{

//returns the Elapsed time

_exeTime = _end - _start;

return _exeTime.ToString();

}

}

///

/// Start the timer

///

public void Start()

{

_start = DateTime.Now.Ticks ;

}

///

/// End the timer

///

public void Stop()

{

_end= DateTime.Now.Ticks ;

}

}

Some of my test samples

static void Main(string[] args)

{

MyTimer m = new MyTimer();

ArrayList a = new ArrayList();

//For Tests

m.Start();

for(int i=0; i<1000;>

{

string sss= "as" + i.ToString();

Console.WriteLine(sss);

a.Add(sss);

}

m.Stop();

Console.WriteLine(m.ElapsedTime);

m.Start();

for(int i=0; i

{

Console.WriteLine(a[i].ToString());

}

m.Stop();

Console.WriteLine(m.ElapsedTime);

//Foreach Tests

m.Start();

foreach(string s in a)

{

Console.WriteLine(s);

}

m.Stop();

Console.WriteLine(m.ElapsedTime);

//String BuilderTest

StringBuilder name = new StringBuilder();

m.Start();

for(int i=0;i<100000;>

{

name.Append(i.ToString());

}

m.Stop();

Console.WriteLine(name.ToString());

Console.WriteLine(m.ElapsedTime);

}