Examples of com.lmax.disruptor.collections.Histogram

com.lmax.disruptor.collections.Histogram

Histogram for tracking the frequency of observations of values below interval upper bounds.

This class is useful for recording timings across a large number of observations when high performance is required.

The interval bounds are used to define the ranges of the histogram buckets. If provided bounds are [10,20,30,40,50] then there will be five buckets, accessible by index 0-4. Any value 0-10 will fall into the first interval bar, values 11-20 will fall into the second bar, and so on.

      System.out.println(msg);
    }
  }


  static String createSamplingReport(final String name, final Histogram histogram) {
    final Histogram data = histogram;
    if (throughput) {
      return data.getMax() + " operations/second";
    }
    final String result = String.format(
        "avg=%.0f 99%%=%d 99.99%%=%d sampleCount=%d", data.getMean(), //
        data.getTwoNinesUpperBound(), //
        data.getFourNinesUpperBound(), //
        data.getCount() //
        );
    return result;
  }

    // ThreadContext.put("aKey", "mdcVal");
    PerfTest.println("Warming up the JVM...");
    final long t1 = System.nanoTime();


    // warmup at least 2 rounds and at most 1 minute
    final Histogram warmupHist = PerfTest.createHistogram();
    final long stop = System.currentTimeMillis() + (60 * 1000);
    final Runnable run1 = new Runnable() {
      @Override
            public void run() {
        for (int i = 0; i < 10; i++) {

    }
    final int LINES = 256 * 1024;


    final Thread[] threads = new Thread[threadCount];
    for (int i = 0; i < threads.length; i++) {
      final Histogram histogram = histograms[i];
      threads[i] = new Thread() {
        @Override
                public void run() {
//            int latencyCount = threadCount >= 16 ? 1000000 : 5000000;
            final int latencyCount = 5000000;

Examples of com.lmax.disruptor.collections.Histogram

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