import com.codahale.metrics.ConsoleReporter; import com.codahale.metrics.MetricRegistry; import com.codahale.metrics.jvm.CpuTimeRatioGauge; import com.codahale.metrics.jvm.FileDescriptorRatioGauge; import com.codahale.metrics.jvm.MemoryUsageGaugeSet; import com.codahale.metrics.jvm.ThreadStatesGaugeSet; public class MetricsExample { private static final MetricRegistry metrics = new MetricRegistry(); public static void main(String[] args) throws InterruptedException { ConsoleReporter reporter = ConsoleReporter.forRegistry(metrics) .convertRatesTo(TimeUnit.SECONDS) .convertDurationsTo(TimeUnit.MILLISECONDS) .build(); // Register JVM metrics metrics.register("cpu", new CpuTimeRatioGauge()); metrics.register("memory", new MemoryUsageGaugeSet()); metrics.register("file-descriptors", new FileDescriptorRatioGauge()); metrics.register("threads", new ThreadStatesGaugeSet()); // Start reporting metrics reporter.start(1, TimeUnit.SECONDS); // Your code here // Stop reporting metrics reporter.stop(); } }