Esempio n. 1
0
        static void Main(String[] args)
        {
            //#1
            // Write: 7865ms 9.7MB/s
            // Read: 17392ms 4.39MB / s
            // ASync Read: 2935ms 25.99MB / s

            // #2
            // Write: 14,115ms 5.41MB/s
            // Read: 6,226ms 12.25MB/s

            // #3
            // Compress: 11801ms 6.47MB / s
            // Decompress: 6967ms 10.95MB / s

            // #4
            // Compress: 10291ms 7.41MB/s
            // Decompress: 5819ms 13.11MB / s

            // #5
            // FIBONACCI
            // Compress: 5986ms 12.75MB / s Total 38MB
            // Decompress: 3455ms 22.08MB / s
            // VLQ
            // Compress: 386ms 197.65MB / s Total 36MB
            // Decompress: 874ms 87.29MB / s

            Int32 min   = 100000;
            Int32 count = 10000000;

            // Seed
            var input = new List <UInt64>((Int32)count);

            for (var v = min; v < min + count; v++)
            {
                input.Add((UInt64)v);
            }

            //////////////////////////////////////////
            Console.WriteLine("FIBONACCI");
            Codec codec      = new FibonacciCodec();
            var   compressed = new MemoryStream((Int32)count * 5);

            // Compress
            var stopWatch = Stopwatch.StartNew();

            codec.CompressUnsigned(compressed, input.ToArray());
            stopWatch.Stop();
            Console.WriteLine("Compress: " + stopWatch.ElapsedMilliseconds + "ms " + Math.Round((Double)count * 1000 * 8 / 1024 / 1024 / stopWatch.ElapsedMilliseconds, 2) + "MB/s Total " + (compressed.Length / 1024 / 1024) + "MB");

            // Rewind
            compressed.Position = 0;

            // Decompress
            stopWatch = Stopwatch.StartNew();
            var output = codec.DecompressUnsigned(compressed, input.Count).ToList();

            stopWatch.Stop();
            Console.WriteLine("Decompress: " + stopWatch.ElapsedMilliseconds + "ms " + Math.Round((Double)count * 1000 * 8 / 1024 / 1024 / stopWatch.ElapsedMilliseconds, 2) + "MB/s");

            // Validate
            var pos = 0;

            for (var v = min; v < min + count; v++)
            {
                if ((int)output[pos++] != v)
                {
                    throw new Exception("Incorrect result. Expected " + v + " got " + output[v] + ".");
                }
            }


            //////////////////////////////////////////
            Console.WriteLine("VLQ");
            codec      = new VLQCodec();
            compressed = new MemoryStream((Int32)count * 5);

            // Compress
            stopWatch = Stopwatch.StartNew();
            codec.CompressUnsigned(compressed, input.ToArray());
            stopWatch.Stop();
            Console.WriteLine("Compress: " + stopWatch.ElapsedMilliseconds + "ms " + Math.Round((Double)count * 1000 * 8 / 1024 / 1024 / stopWatch.ElapsedMilliseconds, 2) + "MB/s Total " + (compressed.Length / 1024 / 1024) + "MB");

            // Rewind
            compressed.Position = 0;

            // Decompress
            stopWatch = Stopwatch.StartNew();
            output    = codec.DecompressUnsigned(compressed, input.Count).ToList();
            stopWatch.Stop();
            Console.WriteLine("Decompress: " + stopWatch.ElapsedMilliseconds + "ms " + Math.Round((Double)count * 1000 * 8 / 1024 / 1024 / stopWatch.ElapsedMilliseconds, 2) + "MB/s");

            // Validate
            pos = 0;
            for (var v = min; v < min + count; v++)
            {
                if ((int)output[pos++] != v)
                {
                    throw new Exception("Incorrect result. Expected " + v + " got " + output[v] + ".");
                }
            }



            Console.WriteLine("\nDone.");
            Console.ReadKey(true);
        }