public IEnumerable<string> Simulate(Load workLoad, int threadCount)
{
currentTime = new Stopwatch();
currentTime.Start();
workLoad.Connect(Enqueue);
totalMessages = workLoad.TotalMessages;
dequeueStrategy.Start(threadCount);
Task.Run(() =>
{
while (workLoad.TotalSentMessages < workLoad.TotalMessages)
{
var before = currentTime.ElapsedMilliseconds;
workLoad.TimePassed(before);
var after = currentTime.ElapsedMilliseconds;
var delay = (int) (after - before);
if (delay < 50)
{
Thread.Sleep(50 - delay);
}
}
signalEndEvent.Wait();
taskStarted.Dispose();
taskEnded.Dispose();
results.CompleteAdding();
});
return results.GetConsumingEnumerable();
}
public void TestSlowMessages()
{
var workload = new Load()
.AddStage(1000, 50, () => 60*60*1000);
var simulator = CreateSimulator();
var results = simulator.Simulate(workload, 10);
DumpToConsole(results);
}
public IEnumerable<string> Simulate(Load workload, int maximumConcurrency)
{
this.maximumConcurrency = maximumConcurrency;
workload.Connect(queue.Add);
StartThread(0);
while (threads.Count > 0)
{
workload.TimePassed(currentTime);
const int longRunningThreshold = 100;
foreach (var runningThread in threads)
{
runningThread.Tick(currentTime);
var blockedTime = currentTime - runningThread.BlockedAt;
if (!runningThread.Dead && !runningThread.Replaced && runningThread.ProcessingMessage && blockedTime > longRunningThreshold) //blocked for more than five seconds
{
runningThread.MarkAsReplaced();
RampUp();
}
}
foreach (var action in currentQueue)
{
action();
}
currentQueue.Clear();
if (threads.Count > 0)
{
var newTime = threads.Min(x => x.DueAt);
if (threads.Any(x => x.LongRunning && !x.Replaced && newTime - currentTime > longRunningThreshold))
{
currentTime = currentTime + longRunningThreshold;
}
else
{
currentTime = newTime;
}
}
//if (!workload.HasMoreMessages && processedMessages == workload.TotalMessages)
//{
// break;
//}
}
return result.Select(x => string.Format("{0,12:n} [{1,2}] {2}", x.Item1, x.Item2, x.Item3));
}
public void TestVariableTimes()
{
var random = new Random(133);
var workload = new Load()
.AddStage(1000, 50, () =>
{
var randomValue = random.Next(100);
if (randomValue < 10)
{
return 12*60*100;
}
if (randomValue < 30)
{
return 1*60*100;
}
return 10;
});
var simulator = CreateSimulator();
var results = simulator.Simulate(workload, 10);
DumpToConsole(results);
}