本文整理了Java中com.yammer.metrics.core.Histogram.count()方法的一些代码示例，展示了Histogram.count()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Histogram.count()方法的具体详情如下：
包路径：com.yammer.metrics.core.Histogram
类名称：Histogram
方法名：count

Histogram.count介绍

[英]Returns the number of values recorded.
[中]返回记录的值的数目。

代码示例

代码示例来源：origin: apache/incubator-pinot

@Override
public String toString() {
 return "NettyServerMetric [_requestsReceived=" + _requestsReceived.count() + ", _bytesSent=" + _bytesSent.count()
   + ", _bytesReceived=" + _bytesReceived.count() + ", _errors=" + _errors.count() + ", _sendResponseMsGauge="
   + _sendResponseMsHistogram.count() + ", _processingLatencyMsGauge=" + _processingLatencyMsHistogram.count()
   + "]";
}

代码示例来源：origin: apache/incubator-pinot

@Override
public String toString() {
 return "NettyClientMetric [_requestsSent=" + _requestsSent.count() + ", _bytesSent=" + _bytesSent.count()
   + ", _bytesReceived=" + _bytesReceived.count() + ", _errors=" + _errors.count() + ", _sendRequestMsGauge="
   + _sendRequestMsHistogram.count() + ", _responseLatencyMsGauge=" + _responseLatencyMsHistogram.count()
   + ", _connectMsGauge=" + _connectMsGauge.value() + "]";
}

代码示例来源：origin: com.yammer.metrics/metrics-core

@Override
public long count() {
  return histogram.count();
}

代码示例来源：origin: com.yammer.metrics/metrics-core

@Override
public long getCount() {
  return metric.count();
}

代码示例来源：origin: com.yammer.metrics/metrics-core

private double variance() {
  if (count() <= 1) {
    return 0.0;
  }
  return variance.get()[1] / (count() - 1);
}

代码示例来源：origin: com.yammer.metrics/metrics-core

@Override
public double mean() {
  if (count() > 0) {
    return sum.get() / (double) count();
  }
  return 0.0;
}

代码示例来源：origin: com.yammer.metrics/metrics-core

@Override
public double max() {
  if (count() > 0) {
    return max.get();
  }
  return 0.0;
}

代码示例来源：origin: com.yammer.metrics/metrics-core

@Override
public double min() {
  if (count() > 0) {
    return min.get();
  }
  return 0.0;
}

代码示例来源：origin: com.yammer.metrics/metrics-core

private void updateVariance(long value) {
  while (true) {
    final double[] oldValues = variance.get();
    final double[] newValues = new double[2];
    if (oldValues[0] == -1) {
      newValues[0] = value;
      newValues[1] = 0;
    } else {
      final double oldM = oldValues[0];
      final double oldS = oldValues[1];
      final double newM = oldM + ((value - oldM) / count());
      final double newS = oldS + ((value - oldM) * (value - newM));
      newValues[0] = newM;
      newValues[1] = newS;
    }
    if (variance.compareAndSet(oldValues, newValues)) {
      return;
    }
  }
}

代码示例来源：origin: com.yammer.metrics/metrics-core

@Override
public double stdDev() {
  if (count() > 0) {
    return sqrt(variance());
  }
  return 0.0;
}

代码示例来源：origin: harbby/presto-connectors

@Override
 public void processHistogram(MetricName name, Histogram histogram, PrintStream stream) {
  super.processHistogram(name, histogram, stream);
  stream.printf(Locale.getDefault(), "             count = %d%n", histogram.count());
 }
}

代码示例来源：origin: org.apache.giraph/giraph-core

@Override
 public void processHistogram(MetricName name, Histogram histogram,
   PrintStream stream) {
  stream.printf("               sum = %,2.2f%n", histogram.sum());
  super.processHistogram(name, histogram, stream);
  stream.printf("             count = %d%n", histogram.count());
 }
} .run();

代码示例来源：origin: com.wavefront/java-lib

private void internalProcessYammerHistogram(Histogram histogram, Context context) throws Exception {
 final JsonGenerator json = context.json;
 json.writeStartObject();
 {
  json.writeNumberField("count", histogram.count());
  writeSummarizable(histogram, json);
  writeSampling(histogram, json);
  if (context.showFullSamples) {
   json.writeObjectField("values", histogram.getSnapshot().getValues());
  }
  if (clear) histogram.clear();
 }
 json.writeEndObject();
}

代码示例来源：origin: wavefrontHQ/java

private void internalProcessYammerHistogram(Histogram histogram, Context context) throws Exception {
 final JsonGenerator json = context.json;
 json.writeStartObject();
 {
  json.writeNumberField("count", histogram.count());
  writeSummarizable(histogram, json);
  writeSampling(histogram, json);
  if (context.showFullSamples) {
   json.writeObjectField("values", histogram.getSnapshot().getValues());
  }
  if (clear) histogram.clear();
 }
 json.writeEndObject();
}

代码示例来源：origin: com.yammer.metrics/metrics-servlet

@Override
public void processHistogram(MetricName name, Histogram histogram, Context context) throws Exception {
  final JsonGenerator json = context.json;
  json.writeStartObject();
  {
    json.writeStringField("type", "histogram");
    json.writeNumberField("count", histogram.count());
    writeSummarizable(histogram, json);
    writeSampling(histogram, json);
    if (context.showFullSamples) {
      json.writeObjectField("values", histogram.getSnapshot().getValues());
    }
  }
  json.writeEndObject();
}

代码示例来源：origin: com.wavefront/proxy

/**
 * @return bytes per minute for requests submissions. Null if no data is available yet.
 */
@Nullable
public Long getBytesPerMinute() {
 if (resultPostingMeter.fifteenMinuteRate() == 0 || resultPostingSizes.mean() == 0 || resultPostingSizes.count() <
   50) {
  return null;
 }
 return (long) (resultPostingSizes.mean() * resultPostingMeter.fifteenMinuteRate());
}

代码示例来源：origin: wavefrontHQ/java

/**
 * @return bytes per minute for requests submissions. Null if no data is available yet.
 */
@Nullable
public Long getBytesPerMinute() {
 if (resultPostingMeter.fifteenMinuteRate() == 0 || resultPostingSizes.mean() == 0 || resultPostingSizes.count() <
   50) {
  return null;
 }
 return (long) (resultPostingSizes.mean() * resultPostingMeter.fifteenMinuteRate());
}

代码示例来源：origin: amient/kafka-metrics

@Override
public void processHistogram(MetricName name, Histogram histogram, Long timestamp) {
  Map<String, Double> fields = new HashMap<String, Double>();
  fields.put("Count", Double.valueOf(histogram.count()));
  fields.put("Max", histogram.max());
  fields.put("Mean", histogram.mean());
  fields.put("Min", histogram.min());
  fields.put("StdDev", histogram.stdDev());
  fields.put("Sum", histogram.sum());
  Snapshot snapshot = histogram.getSnapshot();
  fields.put("95thPercentile", snapshot.get95thPercentile());
  fields.put("98thPercentile", snapshot.get98thPercentile());
  fields.put("99thPercentile", snapshot.get99thPercentile());
  fields.put("999thPercentile", snapshot.get999thPercentile());
  publish(createMeasurement(name, timestamp, fixedTags, fields));
}

代码示例来源：origin: addthis/MetricCatcher

@Test
public void testUpdateMetric_Histogram_Biased() {
  jsonMetric.setType("biased");
  Histogram metric = (Histogram) metricCatcher.createMetric(jsonMetric);
  metricCatcher.updateMetric(metric, 1);
  assertEquals(1, metric.count());
}

代码示例来源：origin: addthis/MetricCatcher

@Test
public void testUpdateMetric_Histogram_MultipleUpdates() {
  jsonMetric.setType("biased");
  Histogram metric = (Histogram) metricCatcher.createMetric(jsonMetric);
  int count = 7;
  for (int x = 0; x < 7; x++) {
    metricCatcher.updateMetric(metric, 1);
  }
  assertEquals(count, metric.count());
}