问PerfView的GCStats和CollectionCount()结果的差异

EN

using System;
using System.Collections.Generic;


class Program
{
    static void Main(string[] args)
    {
        GcReport();
        const int size = 10 * 1024 * 1024;
        var list = new List<int>();
        for (int i = 0; i < size; i++)
        {
            list.Add(i);
        }

        for (int i = 0; i < size; i++)
        {
            object obj1 = list[i];
            object obj2 = list[i];

            if (obj1 == obj2)
                Console.WriteLine("Match found");
        }

        GcReport();  // <-- results are shown below 
    }

    private static void GcReport()
    {
        Console.WriteLine($"Gen0: {GC.CollectionCount(0)}");
        Console.WriteLine($"Gen1: {GC.CollectionCount(1)}");
        Console.WriteLine($"Gen2: {GC.CollectionCount(2)}");
    }
}