Example usage for java.lang.management ThreadMXBean isThreadContentionMonitoringSupported

Introduction

In this page you can find the example usage for java.lang.management ThreadMXBean isThreadContentionMonitoringSupported.

Prototype

public boolean isThreadContentionMonitoringSupported();

Source Link

Document

Tests if the Java virtual machine supports thread contention monitoring.

Usage

From source file:io.pcp.parfait.benchmark.StandardMetricThroughPutBenchmark.java

public static void main(String[] args) throws InterruptedException, UnknownHostException {
    int numThreads = args.length < 1 ? Runtime.getRuntime().availableProcessors() : Integer.valueOf(args[0]);
    int numCounters = 1000;
    int iterations = 10000;

    ReportHelper.environmentReportHeader();
    ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
    System.out.printf("Thread Contention Supported: %s, Enabled by default: %s\n",
            threadMXBean.isThreadContentionMonitoringSupported(),
            threadMXBean.isThreadContentionMonitoringEnabled());
    System.out.printf("numThreads: %d, numCounters=%d, iterations=%d\n", numThreads, numCounters, iterations);

    new StandardMetricThroughPutBenchmark(numThreads, numCounters, iterations, false, false).runBenchmark();
    new StandardMetricThroughPutBenchmark(numThreads, numCounters, iterations, true, false).runBenchmark();
    new StandardMetricThroughPutBenchmark(numThreads, numCounters, iterations, true, true).runBenchmark();

    // now do it all again reverse, in case there's any JVM warmup issues unfairly treating the first/last runs
    new StandardMetricThroughPutBenchmark(numThreads, numCounters, iterations, true, true).runBenchmark();
    new StandardMetricThroughPutBenchmark(numThreads, numCounters, iterations, true, false).runBenchmark();
    new StandardMetricThroughPutBenchmark(numThreads, numCounters, iterations, false, false).runBenchmark();
}

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