Example usage for org.apache.commons.math3.stat.descriptive.rank PSquarePercentile PSquarePercentile

Introduction

In this page you can find the example usage for org.apache.commons.math3.stat.descriptive.rank PSquarePercentile PSquarePercentile.

Prototype

public PSquarePercentile(final double p) 

Source Link

Document

Constructs a PSquarePercentile with the specific percentile value.

Usage

From source file:org.hawkular.metrics.core.service.metrics.CounterITest.java

@Test
public void testBucketPercentiles() {
    String tenantId = "counter-stats-test";

    int testSize = 100;
    List<DataPoint<Long>> counterList = new ArrayList<>(testSize);

    PSquarePercentile top = new PSquarePercentile(99.9);

    for (long i = 0; i < testSize; i++) {
        counterList.add(new DataPoint<Long>((long) 60000 + i, i));
        top.increment(i);// w  w  w  . jav a 2s.  c om
    }

    List<Percentile> percentiles = asList(new Percentile("50.0"), new Percentile("90.0"),
            new Percentile("99.0"), new Percentile("99.9"));

    Metric<Long> counter = new Metric<>(new MetricId<>(tenantId, COUNTER, "C1"), counterList);

    doAction(() -> metricsService.addDataPoints(COUNTER, Observable.just(counter)));

    List<NumericBucketPoint> actual = metricsService.findCounterStats(counter.getMetricId(), 0,
            now().getMillis(), Buckets.fromStep(60_000, 60_100, 60_100), percentiles).toBlocking().single();

    assertEquals(1, actual.size());

    NumericBucketPoint bucket = actual.get(0);

    assertEquals((Integer) testSize, bucket.getSamples());
    assertEquals(percentiles.size(), bucket.getPercentiles().size());
    assertEquals(top.getResult(), bucket.getPercentiles().get(3).getValue());
}

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From source file:org.hawkular.metrics.core.service.MetricsServiceITest.java

@Test
public void testBucketPercentiles() {
    String tenantId = "counter-stats-test";

    int testSize = 100;
    List<DataPoint<Long>> counterList = new ArrayList<>(testSize);

    PSquarePercentile top = new PSquarePercentile(99.9);

    for (long i = 0; i < testSize; i++) {
        counterList.add(new DataPoint<Long>((long) 60000 + i, i));
        top.increment(i);//from  ww  w  .j  av  a  2 s  .  co  m
    }

    List<Double> percentiles = asList(50.0, 90.0, 99.0, 99.9);

    Metric<Long> counter = new Metric<>(new MetricId<>(tenantId, COUNTER, "C1"), counterList);

    doAction(() -> metricsService.addDataPoints(COUNTER, Observable.just(counter)));

    List<NumericBucketPoint> actual = metricsService.findCounterStats(counter.getMetricId(), 0,
            now().getMillis(), Buckets.fromStep(60_000, 60_100, 60_100), percentiles).toBlocking().single();

    assertEquals(1, actual.size());

    NumericBucketPoint bucket = actual.get(0);

    assertEquals(testSize, bucket.getSamples());
    assertEquals(percentiles.size(), bucket.getPercentiles().size());
    assertEquals(top.getResult(), bucket.getPercentiles().get(3).getValue());
}

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From source file:org.hawkular.metrics.core.service.NumericDataPointCollector.java

NumericDataPointCollector(Buckets buckets, int bucketIndex, List<Double> percentileList) {
    this.buckets = buckets;
    this.bucketIndex = bucketIndex;
    this.percentiles = new ArrayList<>();
    percentileList.stream().forEach(d -> percentiles.add(new PSquarePercentile(d)));
}

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