private OrleansTaskScheduler(int maxActiveThreads, TimeSpan delayWarningThreshold, TimeSpan activationSchedulingQuantum,
TimeSpan turnWarningLengthThreshold, bool injectMoreWorkerThreads, LimitValue maxPendingItemsLimit)
{
Instance = this;
DelayWarningThreshold = delayWarningThreshold;
WorkItemGroup.ActivationSchedulingQuantum = activationSchedulingQuantum;
TurnWarningLengthThreshold = turnWarningLengthThreshold;
applicationTurnsStopped = false;
MaxPendingItemsLimit = maxPendingItemsLimit;
workgroupDirectory = new ConcurrentDictionary<ISchedulingContext, WorkItemGroup>();
RunQueue = new WorkQueue();
logger.Info("Starting OrleansTaskScheduler with {0} Max Active application Threads and 1 system thread.", maxActiveThreads);
Pool = new WorkerPool(this, maxActiveThreads, injectMoreWorkerThreads);
IntValueStatistic.FindOrCreate(StatisticNames.SCHEDULER_WORKITEMGROUP_COUNT, () => WorkItemGroupCount);
IntValueStatistic.FindOrCreate(new StatisticName(StatisticNames.QUEUES_QUEUE_SIZE_INSTANTANEOUS_PER_QUEUE, "Scheduler.LevelOne"), () => RunQueueLength);
if (!StatisticsCollector.CollectShedulerQueuesStats) return;
FloatValueStatistic.FindOrCreate(new StatisticName(StatisticNames.QUEUES_QUEUE_SIZE_AVERAGE_PER_QUEUE, "Scheduler.LevelTwo.Average"), () => AverageRunQueueLengthLevelTwo);
FloatValueStatistic.FindOrCreate(new StatisticName(StatisticNames.QUEUES_ENQUEUED_PER_QUEUE, "Scheduler.LevelTwo.Average"), () => AverageEnqueuedLevelTwo);
FloatValueStatistic.FindOrCreate(new StatisticName(StatisticNames.QUEUES_AVERAGE_ARRIVAL_RATE_PER_QUEUE, "Scheduler.LevelTwo.Average"), () => AverageArrivalRateLevelTwo);
FloatValueStatistic.FindOrCreate(new StatisticName(StatisticNames.QUEUES_QUEUE_SIZE_AVERAGE_PER_QUEUE, "Scheduler.LevelTwo.Sum"), () => SumRunQueueLengthLevelTwo);
FloatValueStatistic.FindOrCreate(new StatisticName(StatisticNames.QUEUES_ENQUEUED_PER_QUEUE, "Scheduler.LevelTwo.Sum"), () => SumEnqueuedLevelTwo);
FloatValueStatistic.FindOrCreate(new StatisticName(StatisticNames.QUEUES_AVERAGE_ARRIVAL_RATE_PER_QUEUE, "Scheduler.LevelTwo.Sum"), () => SumArrivalRateLevelTwo);
}
public void AddLimitValue(string name, LimitValue @value)
{
limitValues.Add(name, @value);
}
public void AddLimitValue(string name, LimitValue @value)
{
limitValues.Add(name, @value);
}
private LimitValue GetMaxEnqueuedRequestLimit()
{
if (maxEnqueuedRequestsLimit != null) return maxEnqueuedRequestsLimit;
if (GrainInstanceType != null)
{
string limitName = CodeGeneration.GrainInterfaceUtils.IsStatelessWorker(GrainInstanceType)
? LimitNames.LIMIT_MAX_ENQUEUED_REQUESTS_STATELESS_WORKER
: LimitNames.LIMIT_MAX_ENQUEUED_REQUESTS;
maxEnqueuedRequestsLimit = nodeConfiguration.LimitManager.GetLimit(limitName); // Cache for next time
return maxEnqueuedRequestsLimit;
}
return nodeConfiguration.LimitManager.GetLimit(LimitNames.LIMIT_MAX_ENQUEUED_REQUESTS);
}
internal WorkItemGroup(OrleansTaskScheduler sched, ISchedulingContext schedulingContext)
{
masterScheduler = sched;
SchedulingContext = schedulingContext;
state = WorkGroupStatus.Waiting;
workItems = new Queue<Task>();
lockable = new Object();
totalItemsEnQueued = 0;
totalItemsProcessed = 0;
totalQueuingDelay = TimeSpan.Zero;
quantumExpirations = 0;
TaskRunner = new ActivationTaskScheduler(this);
MaxPendingItemsLimit = LimitManager.GetLimit(LimitNames.LIMIT_MAX_PENDING_ITEMS);
log = IsSystem ? TraceLogger.GetLogger("Scheduler." + Name + ".WorkItemGroup", TraceLogger.LoggerType.Runtime) : appLogger;
if (StatisticsCollector.CollectShedulerQueuesStats)
{
queueTracking = new QueueTrackingStatistic("Scheduler." + SchedulingContext.Name);
queueTracking.OnStartExecution();
}
if (StatisticsCollector.CollectPerWorkItemStats)
{
workItemGroupStatisticsNumber = SchedulerStatisticsGroup.RegisterWorkItemGroup(SchedulingContext.Name, SchedulingContext,
() =>
{
var sb = new StringBuilder();
lock (lockable)
{
sb.Append("QueueLength = " + WorkItemCount);
sb.Append(String.Format(", State = {0}", state));
if (state == WorkGroupStatus.Runnable)
sb.Append(String.Format("; oldest item is {0} old", workItems.Count >= 0 ? workItems.Peek().ToString() : "null"));
}
return sb.ToString();
});
}
}