主题：【倡议】Java SE 5.0和.NET 2.0擂台赛 -- Highway

首先，我对老轧的程序进行了一些简单的修改，主要如下：

一。取消了对String的测试部分，而只测试StringBuilder，因为String的性能明显落后，测试的意义不大。

二。测试范围从1000到100，000，步长为1000，这样可以看出一些比较细的东西。

下面是我的测试代码：

#region Using directives

using System;

using System.Collections.Generic;

using System.Text;

#endregion

namespace StringTest

{

class Program

{

private String[] prepareString(int number)

{

System.Console.WriteLine("String number: " + number);

String[] strs = new String[number];

for (int i = 0; i < number; i++)

strs[i] = "Highway" + i;

return strs;

}

private void stringBuilderTest(String[] input)

{

long start = System.Environment.TickCount;

StringBuilder sb = new StringBuilder();

for (int i = 0; i < input.Length; i++)

sb.Append(input[i]);

long time = System.Environment.TickCount - start;

System.Console.WriteLine("StringBuilder Takes Time: " + time + "ms");

return;

}

public void test()

{

String[] strs = null;

for (int i = 1; i <= 100; i++)

{

strs = this.prepareString(i * 1000);

this.stringBuilderTest(strs);

}

}

static void Main(string[] args)

{

Program p = new Program();

p.test();

}

}

}

在将Build结果从Debug设定为Release并且设定目标CPU为x86以后，我得到以下的测试结果：

String number: 1000

StringBuilder Takes Time: 0ms

String number: 2000

StringBuilder Takes Time: 0ms

String number: 3000

StringBuilder Takes Time: 0ms

String number: 4000

StringBuilder Takes Time: 0ms

String number: 5000

StringBuilder Takes Time: 0ms

String number: 6000

StringBuilder Takes Time: 0ms

String number: 7000

StringBuilder Takes Time: 0ms

String number: 8000

StringBuilder Takes Time: 0ms

String number: 9000

StringBuilder Takes Time: 16ms

String number: 10000

StringBuilder Takes Time: 15ms

String number: 11000

StringBuilder Takes Time: 0ms

String number: 12000

StringBuilder Takes Time: 0ms

String number: 13000

StringBuilder Takes Time: 15ms

String number: 14000

StringBuilder Takes Time: 16ms

String number: 15000

StringBuilder Takes Time: 0ms

String number: 16000

StringBuilder Takes Time: 16ms

String number: 17000

StringBuilder Takes Time: 15ms

String number: 18000

StringBuilder Takes Time: 16ms

String number: 19000

StringBuilder Takes Time: 0ms

String number: 20000

StringBuilder Takes Time: 16ms

String number: 21000

StringBuilder Takes Time: 16ms

String number: 22000

StringBuilder Takes Time: 16ms

String number: 23000

StringBuilder Takes Time: 15ms

String number: 24000

StringBuilder Takes Time: 0ms

String number: 25000

StringBuilder Takes Time: 0ms

String number: 26000

StringBuilder Takes Time: 0ms

String number: 27000

StringBuilder Takes Time: 16ms

String number: 28000

StringBuilder Takes Time: 0ms

String number: 29000

StringBuilder Takes Time: 0ms

String number: 30000

StringBuilder Takes Time: 0ms

String number: 31000

StringBuilder Takes Time: 0ms

String number: 32000

StringBuilder Takes Time: 0ms

String number: 33000

StringBuilder Takes Time: 31ms

String number: 34000

StringBuilder Takes Time: 31ms

String number: 35000

StringBuilder Takes Time: 46ms

String number: 36000

StringBuilder Takes Time: 0ms

String number: 37000

StringBuilder Takes Time: 0ms

String number: 38000

StringBuilder Takes Time: 15ms

String number: 39000

StringBuilder Takes Time: 16ms

String number: 40000

StringBuilder Takes Time: 16ms

String number: 41000

StringBuilder Takes Time: 31ms

String number: 42000

StringBuilder Takes Time: 0ms

String number: 43000

StringBuilder Takes Time: 31ms

String number: 44000

StringBuilder Takes Time: 31ms

String number: 45000

StringBuilder Takes Time: 16ms

String number: 46000

StringBuilder Takes Time: 63ms

String number: 47000

StringBuilder Takes Time: 0ms

String number: 48000

StringBuilder Takes Time: 63ms

String number: 49000

StringBuilder Takes Time: 47ms

String number: 50000

StringBuilder Takes Time: 16ms

String number: 51000

StringBuilder Takes Time: 47ms

String number: 52000

StringBuilder Takes Time: 32ms

String number: 53000

StringBuilder Takes Time: 16ms

String number: 54000

StringBuilder Takes Time: 47ms

String number: 55000

StringBuilder Takes Time: 31ms

String number: 56000

StringBuilder Takes Time: 16ms

String number: 57000

StringBuilder Takes Time: 62ms

String number: 58000

StringBuilder Takes Time: 47ms

String number: 59000

StringBuilder Takes Time: 16ms

String number: 60000

StringBuilder Takes Time: 78ms

String number: 61000

StringBuilder Takes Time: 47ms

String number: 62000

StringBuilder Takes Time: 15ms

String number: 63000

StringBuilder Takes Time: 63ms

String number: 64000

StringBuilder Takes Time: 47ms

String number: 65000

StringBuilder Takes Time: 15ms

String number: 66000

StringBuilder Takes Time: 62ms

String number: 67000

StringBuilder Takes Time: 46ms

String number: 68000

StringBuilder Takes Time: 0ms

String number: 69000

StringBuilder Takes Time: 62ms

String number: 70000

StringBuilder Takes Time: 47ms

String number: 71000

StringBuilder Takes Time: 16ms

String number: 72000

StringBuilder Takes Time: 79ms

String number: 73000

StringBuilder Takes Time: 62ms

String number: 74000

StringBuilder Takes Time: 31ms

String number: 75000

StringBuilder Takes Time: 125ms

String number: 76000

StringBuilder Takes Time: 16ms

String number: 77000

StringBuilder Takes Time: 31ms

String number: 78000

StringBuilder Takes Time: 94ms

String number: 79000

StringBuilder Takes Time: 15ms

String number: 80000

StringBuilder Takes Time: 15ms

String number: 81000

StringBuilder Takes Time: 16ms

String number: 82000

StringBuilder Takes Time: 16ms

String number: 83000

StringBuilder Takes Time: 15ms

String number: 84000

StringBuilder Takes Time: 16ms

String number: 85000

StringBuilder Takes Time: 15ms

String number: 86000

StringBuilder Takes Time: 16ms

String number: 87000

StringBuilder Takes Time: 15ms

String number: 88000

StringBuilder Takes Time: 31ms

String number: 89000

StringBuilder Takes Time: 94ms

String number: 90000

StringBuilder Takes Time: 15ms

String number: 91000

StringBuilder Takes Time: 31ms

String number: 92000

StringBuilder Takes Time: 32ms

String number: 93000

StringBuilder Takes Time: 15ms

String number: 94000

StringBuilder Takes Time: 31ms

String number: 95000

StringBuilder Takes Time: 31ms

String number: 96000

StringBuilder Takes Time: 31ms

String number: 97000

StringBuilder Takes Time: 31ms

String number: 98000

StringBuilder Takes Time: 16ms

String number: 99000

StringBuilder Takes Time: 15ms

String number: 100000

StringBuilder Takes Time: 32ms

和我对Java的对应测试相比，测试结果基本等同于Java StringBuilder所对应的结果，不管它是在Server模式下还是Client模式。

注：以上测试结果是在一台运行Windows XP Pro+SP2, 512M内存，Visual Studio 2005 Beta1+.Net 2.0 Beta1的机器上得出的。