/// <summary>
/// Creates a buffer pool.
/// </summary>
/// <param name="bufferSize">The size, in bytes, of each buffer.</param>
/// <param name="maxBuffers">The maximum number of buffers to keep around, unused; by default, the number of unused buffers is unbounded.</param>
private BufferPool(int bufferSize, int maxBuffers, int preallocationSize, string name)
{
Name = name;
byteBufferSize = bufferSize;
buffers = maxBuffers <= 0 ? new BlockingCollection <byte[]>() : new BlockingCollection <byte[]>(maxBuffers);
var globalPoolSizeStat = IntValueStatistic.FindOrCreate(StatisticNames.SERIALIZATION_BUFFERPOOL_BUFFERS_INPOOL,
() => Count);
allocatedBufferCounter = CounterStatistic.FindOrCreate(StatisticNames.SERIALIZATION_BUFFERPOOL_ALLOCATED_BUFFERS);
checkedOutBufferCounter = CounterStatistic.FindOrCreate(StatisticNames.SERIALIZATION_BUFFERPOOL_CHECKED_OUT_BUFFERS);
checkedInBufferCounter = CounterStatistic.FindOrCreate(StatisticNames.SERIALIZATION_BUFFERPOOL_CHECKED_IN_BUFFERS);
droppedBufferCounter = CounterStatistic.FindOrCreate(StatisticNames.SERIALIZATION_BUFFERPOOL_CHECKED_IN_DROPPED_BUFFERS);
// Those 2 counters should be equal. If not, it means we don't release all buffers.
IntValueStatistic.FindOrCreate(StatisticNames.SERIALIZATION_BUFFERPOOL_INUSE_CHECKED_OUT_NOT_CHECKED_IN_BUFFERS,
() => checkedOutBufferCounter.GetCurrentValue()
- checkedInBufferCounter.GetCurrentValue()
- droppedBufferCounter.GetCurrentValue());
IntValueStatistic.FindOrCreate(StatisticNames.SERIALIZATION_BUFFERPOOL_INUSE_ALLOCATED_NOT_INPOOL_BUFFERS,
() => allocatedBufferCounter.GetCurrentValue()
- globalPoolSizeStat.GetCurrentValue()
- droppedBufferCounter.GetCurrentValue());
if (preallocationSize <= 0)
{
return;
}
var dummy = GetMultiBuffer(preallocationSize * Size);
Release(dummy);
}
internal static void Init(TimeSpan responseTimeout)
{
if (!StatisticsCollector.CollectApplicationRequestsStats)
{
return;
}
const CounterStorage storage = CounterStorage.LogAndTable;
appRequestsLatencyHistogram = ExponentialHistogramValueStatistic.Create_ExponentialHistogram_ForTiming(
StatisticNames.APP_REQUESTS_LATENCY_HISTOGRAM, NUM_APP_REQUESTS_EXP_LATENCY_HISTOGRAM_CATEGORIES);
timedOutRequests = CounterStatistic.FindOrCreate(StatisticNames.APP_REQUESTS_TIMED_OUT, storage);
totalAppRequests = CounterStatistic.FindOrCreate(StatisticNames.APP_REQUESTS_TOTAL_NUMBER_OF_REQUESTS, storage);
appRequestsTotalLatency = CounterStatistic.FindOrCreate(StatisticNames.APP_REQUESTS_LATENCY_TOTAL, false, storage, true);
appRequestsAverageLatency = FloatValueStatistic.FindOrCreate(
StatisticNames.APP_REQUESTS_LATENCY_AVERAGE,
() =>
{
long totalLatencyInTicks = appRequestsTotalLatency.GetCurrentValue();
if (totalLatencyInTicks == 0)
{
return(0);
}
long numReqs = totalAppRequests.GetCurrentValue();
long averageLatencyInTicks = (long)((double)totalLatencyInTicks / (double)numReqs);
return((float)Utils.TicksToMilliSeconds(averageLatencyInTicks));
}, storage);
}
public TimeSpan GetCurrentValue()
{
long sampleCount, tickCount;
lock (instanceLock)
{
sampleCount = sampleCounter.GetCurrentValue();
tickCount = tickAccum.GetCurrentValue();
}
return(sampleCount == 0 ? TimeSpan.Zero : TimeSpan.FromTicks(tickCount / sampleCount));
}
public QueueTrackingStatistic(string queueName)
{
if (StatisticsCollector.CollectQueueStats)
{
const CounterStorage storage = CounterStorage.LogAndTable;
averageQueueSizeCounter = AverageValueStatistic.FindOrCreate(
new StatisticName(StatisticNames.QUEUES_QUEUE_SIZE_AVERAGE_PER_QUEUE, queueName), storage);
numEnqueuedRequestsCounter = CounterStatistic.FindOrCreate(
new StatisticName(StatisticNames.QUEUES_ENQUEUED_PER_QUEUE, queueName), false, storage);
if (TrackExtraStats)
{
totalExecutionTime = TimeIntervalFactory.CreateTimeInterval(true);
averageArrivalRate = FloatValueStatistic.FindOrCreate(
new StatisticName(StatisticNames.QUEUES_AVERAGE_ARRIVAL_RATE_PER_QUEUE, queueName),
() =>
{
TimeSpan totalTime = totalExecutionTime.Elapsed;
if (totalTime.Ticks == 0)
{
return(0);
}
long numReqs = numEnqueuedRequestsCounter.GetCurrentValue();
return((float)((((double)numReqs * (double)TimeSpan.TicksPerSecond)) / (double)totalTime.Ticks));
}, storage);
}
averageTimeInQueue = AverageValueStatistic.FindOrCreate(new StatisticName(StatisticNames.QUEUES_TIME_IN_QUEUE_AVERAGE_MILLIS_PER_QUEUE, queueName), storage);
averageTimeInQueue.AddValueConverter(Utils.AverageTicksToMilliSeconds);
if (averageTimeInAllQueues == null)
{
averageTimeInAllQueues = AverageValueStatistic.FindOrCreate(new StatisticName(StatisticNames.QUEUES_TIME_IN_QUEUE_AVERAGE_MILLIS_PER_QUEUE, "AllQueues"), storage);
averageTimeInAllQueues.AddValueConverter(Utils.AverageTicksToMilliSeconds);
}
if (totalTimeInAllQueues == null)
{
totalTimeInAllQueues = CounterStatistic.FindOrCreate(
new StatisticName(StatisticNames.QUEUES_TIME_IN_QUEUE_TOTAL_MILLIS_PER_QUEUE, "AllQueues"), false, storage);
totalTimeInAllQueues.AddValueConverter(Utils.TicksToMilliSeconds);
}
}
}
