A simple performance test written in C# using TPL. (Parallel.For)

PerfTestTplFor.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;

namespace PerfTestTpl.ParallelImpl
{
    class Program
    {
        static void Main(string[] args)
        {
            var watch = System.Diagnostics.Stopwatch.StartNew();

            var count = new Stack<int>();
            string text;

            using (var reader = new StreamReader("./seeds.txt"))
            {
                text = reader.ReadToEnd();
            }

            var lines = text.Split('\n');

            Parallel.For(0L, lines.Length, (idx) =>
            {
                var line = lines[idx];

                var stringBounds = line.Split(' ');

                var bounds = new int[]
                        {
                            Convert.ToInt32(stringBounds[0]),
                            Convert.ToInt32(stringBounds[1])
                        };

                count.Push(PalindromeCountBetween(bounds[0], bounds[1]));
            });

            Console.WriteLine("Count: {0}", count.Sum());

            watch.Stop();

            Console.WriteLine("Elapsed: {0} secs", watch.Elapsed.TotalSeconds);
        }

        public static bool IsPalindrome(int x)
        {
            var copy = x;
            var reverse = 0;

            while (copy > 0)
            {
                reverse = reverse * 10 + copy % 10;
                copy /= 10;
            }

            return x == reverse;
        }

        public static int PalindromeCountBetween(int lower, int upper)
        {
            var result = 0;

            for (int i = lower; i <= upper; i++)
            {
                if (IsPalindrome(i))
                {
                    result++;
                }
            }

            return result;
        }
    }
}