public void Setup(BenchmarkContext context)
{
_actorSystem = ActorSystem.Create("MergeManyBenchmark",
ConfigurationFactory.FromResource<AkkaSpec>("Akka.Streams.TestKit.Tests.reference.conf"));
_actorSystem.Settings.InjectTopLevelFallback(ActorMaterializer.DefaultConfig());
_materializerSettings = ActorMaterializerSettings.Create(_actorSystem).WithDispatcher("akka.test.stream-dispatcher");
_materializer = _actorSystem.Materializer(_materializerSettings);
var takeSource = CreateSource(NumberOfElements);
var singleSubSource = CreateSource(NumberOfElements);
var singleSource = Source.Repeat(0).Take(1).MergeMany(1, _ => singleSubSource);
var tenSubSources = CreateSource(NumberOfElements/10);
var tenSources = Source.Repeat(0).Take(10).MergeMany(10, _ => tenSubSources);
_takeGraph = ToSource(takeSource);
_singleGraph = ToSource(singleSource);
_tenGraph = ToSource(tenSources);
}