/**
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE
* file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file
* to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package org.apache.kafka.test;
import java.util.Arrays;
import org.apache.kafka.common.metrics.Metrics;
import org.apache.kafka.common.metrics.Sensor;
import org.apache.kafka.common.metrics.stats.Avg;
import org.apache.kafka.common.metrics.stats.Count;
import org.apache.kafka.common.metrics.stats.Max;
import org.apache.kafka.common.metrics.stats.Percentile;
import org.apache.kafka.common.metrics.stats.Percentiles;
import org.apache.kafka.common.metrics.stats.Percentiles.BucketSizing;
public class MetricsBench {
public static void main(String[] args) {
long iters = Long.parseLong(args[0]);
Metrics metrics = new Metrics();
Sensor parent = metrics.sensor("parent");
Sensor child = metrics.sensor("child", parent);
for (Sensor sensor : Arrays.asList(parent, child)) {
sensor.add(sensor.name() + ".avg", new Avg());
sensor.add(sensor.name() + ".count", new Count());
sensor.add(sensor.name() + ".max", new Max());
sensor.add(new Percentiles(1024,
0.0,
iters,
BucketSizing.CONSTANT,
new Percentile(sensor.name() + ".median", 50.0),
new Percentile(sensor.name() + ".p_99", 99.0)));
}
long start = System.nanoTime();
for (int i = 0; i < iters; i++)
parent.record(i);
double ellapsed = (System.nanoTime() - start) / (double) iters;
System.out.println(String.format("%.2f ns per metric recording.", ellapsed));
}
}