Examples of com.codahale.metrics.SlidingWindowReservoir

com.codahale.metrics.SlidingWindowReservoir
A {@link Reservoir} implementation backed by a sliding window that stores the last {@code N}measurements.

     * {@inheritDoc}
     */
    @Override
    public Histogram buildHistogram() {


        final SlidingWindowReservoir slidingWindowReservoir = new SlidingWindowReservoir(nrOfMeasurements);
        return new Histogram(slidingWindowReservoir);
    }

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      // timers for scheduler operations
      int timeWindowSize = conf.getInt(
              SLSConfiguration.METRICS_TIMER_WINDOW_SIZE,
              SLSConfiguration.METRICS_TIMER_WINDOW_SIZE_DEFAULT);
      schedulerAllocateTimer = new Timer(
              new SlidingWindowReservoir(timeWindowSize));
      schedulerHandleTimer = new Timer(
              new SlidingWindowReservoir(timeWindowSize));
      schedulerHandleTimerMap = new HashMap<SchedulerEventType, Timer>();
      for (SchedulerEventType e : SchedulerEventType.values()) {
        Timer timer = new Timer(new SlidingWindowReservoir(timeWindowSize));
        schedulerHandleTimerMap.put(e, timer);
      }
      // histogram for scheduler operations (Samplers)
      schedulerHistogramList = new ArrayList<Histogram>();
      histogramTimerMap = new HashMap<Histogram, Timer>();
      Histogram schedulerAllocateHistogram = new Histogram(
              new SlidingWindowReservoir(SAMPLING_SIZE));
      metrics.register("sampler.scheduler.operation.allocate.timecost",
              schedulerAllocateHistogram);
      schedulerHistogramList.add(schedulerAllocateHistogram);
      histogramTimerMap.put(schedulerAllocateHistogram, schedulerAllocateTimer);
      Histogram schedulerHandleHistogram = new Histogram(
              new SlidingWindowReservoir(SAMPLING_SIZE));
      metrics.register("sampler.scheduler.operation.handle.timecost",
              schedulerHandleHistogram);
      schedulerHistogramList.add(schedulerHandleHistogram);
      histogramTimerMap.put(schedulerHandleHistogram, schedulerHandleTimer);
      for (SchedulerEventType e : SchedulerEventType.values()) {
        Histogram histogram = new Histogram(
                new SlidingWindowReservoir(SAMPLING_SIZE));
        metrics.register(
                "sampler.scheduler.operation.handle." + e + ".timecost",
                histogram);
        schedulerHistogramList.add(histogram);
        histogramTimerMap.put(histogram, schedulerHandleTimerMap.get(e));

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      // timers for scheduler operations
      int timeWindowSize = conf.getInt(
              SLSConfiguration.METRICS_TIMER_WINDOW_SIZE,
              SLSConfiguration.METRICS_TIMER_WINDOW_SIZE_DEFAULT);
      schedulerAllocateTimer = new Timer(
              new SlidingWindowReservoir(timeWindowSize));
      schedulerHandleTimer = new Timer(
              new SlidingWindowReservoir(timeWindowSize));
      schedulerHandleTimerMap = new HashMap<SchedulerEventType, Timer>();
      for (SchedulerEventType e : SchedulerEventType.values()) {
        Timer timer = new Timer(new SlidingWindowReservoir(timeWindowSize));
        schedulerHandleTimerMap.put(e, timer);
      }
      // histogram for scheduler operations (Samplers)
      schedulerHistogramList = new ArrayList<Histogram>();
      histogramTimerMap = new HashMap<Histogram, Timer>();
      Histogram schedulerAllocateHistogram = new Histogram(
              new SlidingWindowReservoir(SAMPLING_SIZE));
      metrics.register("sampler.scheduler.operation.allocate.timecost",
              schedulerAllocateHistogram);
      schedulerHistogramList.add(schedulerAllocateHistogram);
      histogramTimerMap.put(schedulerAllocateHistogram, schedulerAllocateTimer);
      Histogram schedulerHandleHistogram = new Histogram(
              new SlidingWindowReservoir(SAMPLING_SIZE));
      metrics.register("sampler.scheduler.operation.handle.timecost",
              schedulerHandleHistogram);
      schedulerHistogramList.add(schedulerHandleHistogram);
      histogramTimerMap.put(schedulerHandleHistogram, schedulerHandleTimer);
      for (SchedulerEventType e : SchedulerEventType.values()) {
        Histogram histogram = new Histogram(
                new SlidingWindowReservoir(SAMPLING_SIZE));
        metrics.register(
                "sampler.scheduler.operation.handle." + e + ".timecost",
                histogram);
        schedulerHistogramList.add(histogram);
        histogramTimerMap.put(histogram, schedulerHandleTimerMap.get(e));

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      // timers for scheduler operations
      int timeWindowSize = conf.getInt(
              SLSConfiguration.METRICS_TIMER_WINDOW_SIZE,
              SLSConfiguration.METRICS_TIMER_WINDOW_SIZE_DEFAULT);
      schedulerAllocateTimer = new Timer(
              new SlidingWindowReservoir(timeWindowSize));
      schedulerHandleTimer = new Timer(
              new SlidingWindowReservoir(timeWindowSize));
      schedulerHandleTimerMap = new HashMap<SchedulerEventType, Timer>();
      for (SchedulerEventType e : SchedulerEventType.values()) {
        Timer timer = new Timer(new SlidingWindowReservoir(timeWindowSize));
        schedulerHandleTimerMap.put(e, timer);
      }
      // histogram for scheduler operations (Samplers)
      schedulerHistogramList = new ArrayList<Histogram>();
      histogramTimerMap = new HashMap<Histogram, Timer>();
      Histogram schedulerAllocateHistogram = new Histogram(
              new SlidingWindowReservoir(SAMPLING_SIZE));
      metrics.register("sampler.scheduler.operation.allocate.timecost",
              schedulerAllocateHistogram);
      schedulerHistogramList.add(schedulerAllocateHistogram);
      histogramTimerMap.put(schedulerAllocateHistogram, schedulerAllocateTimer);
      Histogram schedulerHandleHistogram = new Histogram(
              new SlidingWindowReservoir(SAMPLING_SIZE));
      metrics.register("sampler.scheduler.operation.handle.timecost",
              schedulerHandleHistogram);
      schedulerHistogramList.add(schedulerHandleHistogram);
      histogramTimerMap.put(schedulerHandleHistogram, schedulerHandleTimer);
      for (SchedulerEventType e : SchedulerEventType.values()) {
        Histogram histogram = new Histogram(
                new SlidingWindowReservoir(SAMPLING_SIZE));
        metrics.register(
                "sampler.scheduler.operation.handle." + e + ".timecost",
                histogram);
        schedulerHistogramList.add(histogram);
        histogramTimerMap.put(histogram, schedulerHandleTimerMap.get(e));

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