StringSerialisationDeserialisation-Benchmarks.cs

[Config(typeof(Config))]
public class StringSerialisationDeserialisation
{
    static void Main(string[] args)
    {
        var test = new StringSerialisationDeserialisation();
        var normalWrite = test.NormalWrite();
        Console.WriteLine("Normal write: length={0}, \"{1}\"", normalWrite.Length, 
                          Encoding.UTF8.GetString(normalWrite.GetBuffer(), 0, (int)normalWrite.Length));
        Console.WriteLine("Normal read: {0}", test.NormalRead());

        var optimisedWrite = test.OptimisedWrite();
        Console.WriteLine("Optimised write: length={0} ({1}), \"{2}\"", 
                          optimisedWrite.Length, optimisedWrite.GetBuffer()[0],
                          Encoding.UTF8.GetString(optimisedWrite.GetBuffer(), 1, (int)optimisedWrite.Length - 1));            
        Console.WriteLine("Optimised read: {0}", test.OptimisedRead());

        var summary = BenchmarkRunner.Run<StringSerialisationDeserialisation>();
    }

    private class Config : ManualConfig
    {
        public Config()
        {
            Add(Job.Clr.WithLaunchCount(1).WithWarmupCount(5).WithTargetCount(5));
            Add(new MemoryDiagnoser());
            Add(JitOptimizationsValidator.FailOnError);
            Add(RPlotExporter.Default);
        }
    }

    private static string textToWriteShort = "Lorem ipsum gravida habitant fames senectus.";
    private static string textToWriteLong = "Lorem ipsum quis per at sit sollicitudin, proin pharetra vivamus maecenas vitae, lacus senectus curabitur ad donec.";

    private static Serializer serialiser = new Serializer();
    private static SerializerSession serializerSession = new SerializerSession(serialiser);
    private static DeserializerSession deserializerSession = new DeserializerSession(serialiser);
    private static StringSerializer stringSerialiser = StringSerializer.Instance;

    private static MemoryStream streamNormalWrite, streamNormalRead;
    private static MemoryStream streamOptimisedWrite, streamOptimisedRead;

    static StringSerialisationDeserialisation()
    {
        // Writing
        streamNormalWrite = new MemoryStream(1024);
        streamOptimisedWrite = new MemoryStream(1024);

        // Reading
        var normalSerialisedText = Encoding.UTF8.GetBytes(textToWriteShort);
        streamNormalRead = new MemoryStream(normalSerialisedText, 0, normalSerialisedText.Length, writable: false, publiclyVisible: true);

        var tempStream = new MemoryStream();
        stringSerialiser.WriteValue(tempStream, textToWriteShort, serializerSession);
        byte[] wireSerialisedText = new byte[tempStream.Length];
        Array.Copy(tempStream.GetBuffer(), wireSerialisedText, tempStream.Length);
        streamOptimisedRead = new MemoryStream(wireSerialisedText);            
    }

    [Benchmark]
    public MemoryStream NormalWrite()
    {
        streamNormalWrite.Position = 0;
        var bytes = Encoding.UTF8.GetBytes(textToWriteShort);
        streamNormalWrite.Write(bytes, 0, bytes.Length);
        return streamNormalWrite;
    }

    [Benchmark]
    public MemoryStream OptimisedWrite()
    {
        streamOptimisedWrite.Position = 0;
        stringSerialiser.WriteValue(streamOptimisedWrite, textToWriteShort, serializerSession);
        return streamOptimisedWrite;
    }

    [Benchmark]
    public string NormalRead()
    {
        return Encoding.UTF8.GetString(streamNormalRead.GetBuffer(), 0, (int)streamNormalRead.Length);
    }

    [Benchmark]
    public string OptimisedRead()
    {
        streamOptimisedRead.Position = 0;
        //return (string)stringSerialiser.ReadValue(streamOptimisedRead, deserializerSession);
        return StringSerializer.ReadValueImpl(streamOptimisedRead, deserializerSession);
    }
}

Results:

Host Process Environment Information:
BenchmarkDotNet.Core=v0.9.9.0
OS=Microsoft Windows NT 6.1.7601 Service Pack 1
Processor=Intel(R) Core(TM) i7-4800MQ CPU 2.70GHz, ProcessorCount=8
Frequency=2630761 ticks, Resolution=380.1181 ns, Timer=TSC
CLR=MS.NET 4.0.30319.42000, Arch=32-bit RELEASE
GC=Concurrent Workstation
JitModules=clrjit-v4.6.1076.0

Type=StringSerialisationDeserialisation  Mode=Throughput  Toolchain=Clr  
Runtime=Clr  LaunchCount=1  WarmupCount=5  
TargetCount=5  

Method	Median	StdDev	Gen 0	Gen 1	Gen 2	Bytes Allocated/Op
NormalWrite	121.9761 ns	8.9020 ns	428.03	-	-	19.87
OptimisedWrite	112.4477 ns	0.5268 ns	-	-	-	0.01
NormalRead	66.2142 ns	0.8424 ns	802.19	-	-	37.00
OptimisedRead	95.5270 ns	1.5711 ns	777.86	-	-	35.95