public ReadWriteHelper(bool supportRecursion)
{
//Debug.WriteLine("Constructing: "+this.ToString());
RecursionPolicy = supportRecursion
? LockRecursionPolicy.SupportsRecursion
: LockRecursionPolicy.NoRecursion;
ContextPool = OptimisticArrayObjectPool.Create <object>();
Action <ReaderWriterLockTracker> recycle = null;
#if DEBUG
recycle = rwlt => Debug.Assert(rwlt.Lock.IsLockFree());
#endif
// ReSharper disable once ExpressionIsAlwaysNull
LockPool = new ConcurrentQueueObjectPool <ReaderWriterLockTracker>(Factory, recycle, d => d.Dispose(), 1000);
}
static void Main()
{
Console.Write("Initializing...");
var sb = new StringBuilder();
var report = new ConsoleReport <object>(sb);
/*
* Notes:
* 1) ConcurrentBag seems to be PAINFULLY slow compared to ConcurrentQueue.
* 2) The speed gap between an optimistic array and its interlocked couterpart grows large very quickly (as expected).
* 3) A sync locked Queue is faster than a sync locked LinkedList.
* 4) ConcurrentQueue seems to be the overall winner when dealing with pools larger than 100 but is the clear loser for very small sizes.
*/
// Start with a baseline...
//report.AddBenchmark("QueueObjectPool", // Note, that this one isn't far off from the following in peformance.
// count => () => QueueObjectPool.Create<object>((int)count * 2));
report.AddBenchmark("Microsoft.Extensions.ObjectPool.DefaultObjectPool",
count => () => new DefaultObjectPool <object>(() => new object(), (int)count * 2));
report.AddBenchmark("ConcurrentQueueObjectPoolSlim",
count => () => ConcurrentQueueObjectPoolSlim.Create <object>((int)count * 2));
report.AddBenchmark("ConcurrentQueueObjectPool",
count => () => ConcurrentQueueObjectPool.Create <object>((int)count * 2));
//report.AddBenchmark("ConcurrentStackObjectPool",
// count => () => ConcurrentStackObjectPool.Create<object>((int)count * 2));
report.AddBenchmark("OptimisticArrayObjectPool",
count => () => OptimisticArrayObjectPool.Create <object>((int)count * 2));
// Is ineveitably slower than the above but should be enabled for testing code changes.
report.AddBenchmark("InterlockedArrayObjectPool",
count => () => InterlockedArrayObjectPool.Create <object>((int)count * 2));
report.Pretest(200, 200); // Run once through first to scramble/warm-up initial conditions.
Console.SetCursorPosition(0, Console.CursorTop);
const int loopMultiple = 12;
report.Test(4, 8 * loopMultiple);
report.Test(10, 8 * loopMultiple);
report.Test(50, 12 * loopMultiple);
report.Test(100, 16 * loopMultiple);
report.Test(250, 32 * loopMultiple);
//report.Test(2000, 64 * loopMultiple);
File.WriteAllText("./BenchmarkResult.txt", sb.ToString());
using (var fs = File.OpenWrite("./BenchmarkResult.csv"))
using (var sw = new StreamWriter(fs))
using (var csv = new CsvWriter(sw))
{
csv.WriteRow(report.ResultLabels);
csv.WriteRows(report.Results);
}
Console.Beep();
Console.WriteLine("(press any key when finished)");
Console.ReadKey();
}
