Example usage for org.apache.commons.math.stat.descriptive SynchronizedDescriptiveStatistics getN

Introduction

In this page you can find the example usage for org.apache.commons.math.stat.descriptive SynchronizedDescriptiveStatistics getN.

Prototype

@Override
public synchronized long getN() 

Source Link

Usage

From source file:org.apache.jackrabbit.oak.scalability.suites.ScalabilityNodeSuite.java

/**
 * Creates the load for the search./*from ww  w.j  ava2s. c  om*/
 *
 * @param context the context
 * @throws RepositoryException the repository exception
 */
protected void createLoad(ExecutionContext context) throws RepositoryException {
    // Creates assets for this run

    SynchronizedDescriptiveStatistics writeStats = new SynchronizedDescriptiveStatistics();

    List<Thread> loadThreads = newArrayList();
    for (int idx = 0; idx < LOADERS; idx++) {
        /* Each loader will write to a directory of the form load-idx */
        Thread t = new Thread(getWriter(context, writeStats, idx), "LoadThread-" + idx);
        loadThreads.add(t);
        t.start();
    }

    // wait for the load threads to finish
    for (Thread t : loadThreads) {
        try {
            t.join();
        } catch (InterruptedException e) {
            LOG.error("Exception waiting for join ", e);
        }
    }

    LOG.info("Write stats");
    LOG.info(String.format("# min     10%%     50%%     90%%     max       N%n"));
    LOG.info(String.format("%6.0f  %6.0f  %6.0f  %6.0f  %6.0f  %6d%n", writeStats.getMin(),
            writeStats.getPercentile(10.0), writeStats.getPercentile(50.0), writeStats.getPercentile(90.0),
            writeStats.getMax(), writeStats.getN()));
}

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