MySQL Forums :: Quality Assurance :: My MySQL DB is unable to process 4+ requests at a time!

Here is my C# code
-----------------------------------------

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MySql.Data.MySqlClient;
using System.Configuration;
using System.Threading;

namespace MySQLDBLoadTestApp
{
class Program
{
static void Main(string[] args)
{

Console.WriteLine("Enter # of threads");
String noThread = Console.ReadLine();

if(String.IsNullOrEmpty(noThread))
noThread = "1";

int threadCnt = Int32.Parse(noThread);

for(int i=0 ; i< threadCnt ; i++)
{
Thread t1 = new Thread(loadTester);
t1.Start();
}


// loadTester();

Console.Read();
}

private static void loadTester()
{
MySqlConnection connection = new MySqlConnection(ConfigurationManager.AppSettings["connectionString"]);

connection.Open();

MySqlTransaction txn = connection.BeginTransaction();

try
{

int count = Int32.Parse(ConfigurationManager.AppSettings["commandCount"]);

for (int i = 1; i <= count; i++)
{
MySqlCommand command = connection.CreateCommand();
String commandText = ConfigurationManager.AppSettings[("command" + i)];

command.CommandText = commandText;

DateTime start = DateTime.Now;
Console.WriteLine("Start : " + commandText + " @ " + start);
command.ExecuteNonQuery();
DateTime end = DateTime.Now;
Console.WriteLine("End : " + commandText + " @ " + end + " Took (sec):" + end.Subtract(start).Seconds);
}

txn.Commit();

}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
txn.Rollback();
}
finally
{
connection.Close();
}
}
}
}