关于BufferedStream效率有关问题

  class Program    {        const int dataArraySize = 200;        const int streamBufferSize = 2000;        const int numberOfLoops = 10000;        static int totalSize = 0;        static void Main(string[] args)        {            StringBuilder sbFS = new StringBuilder();            StringBuilder sbBS = new StringBuilder();            FileStream fs = new FileStream(@"E:\1.txt", FileMode.Open, FileAccess.Read);            BufferedStream bs = new BufferedStream(fs, streamBufferSize);            byte[] by = new byte[dataArraySize];            int temp = 0;            try            {                //FileStream Read                DateTime startFS = DateTime.Now;                while ((temp = fs.Read(by, 0, by.Length)) > 0)                {                    totalSize += temp;                    //sbFS.Append(Encoding.GetEncoding("gb2312").GetString(by));                }                double endFS = (DateTime.Now - startFS).TotalMilliseconds;                Console.WriteLine("FileStream Read TotalBit ： {0}", totalSize);                Console.WriteLine("FileStream Read Time ： {0}", endFS.ToString("F5"));                //Reset                temp = 0;                totalSize = 0;                Array.Clear(by, 0, by.Length);                fs.Seek(0, SeekOrigin.Begin);                //BufferedStream                DateTime startBS = DateTime.Now;                while ((temp = bs.Read(by, 0, by.Length)) > 0)                {                    totalSize += temp;                    //sbBS.Append(Encoding.GetEncoding("gb2312").GetString(by));                }                double endBS = (DateTime.Now - startBS).TotalMilliseconds;                Console.WriteLine("BufferedStream Read TotalBit ： {0}", totalSize);                Console.WriteLine("BufferedStream Read Time ： {0}", endBS.ToString("F5"));            }            finally            {                bs.Close();                bs.Dispose();                fs.Close();                fs.Dispose();            }            Console.ReadLine();        }    }