/**
* 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.hadoop.metrics;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.metrics.APITrace.*;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import java.io.IOException;
/**
*
*/
public class BenchmarkAPITrace extends Configured implements Tool {
// measure performance of logging method
public static void takeMeasurements() {
long startTime = System.currentTimeMillis();
long lastTime = startTime;
for (int i = 0; i < 10; i++) {
for (int j = 0; j < 1e5; j++) {
CallEvent event = new CallEvent();
event.logCall(0,
100,
new Object[] {"arg1", "arg2", "arg3"},
123);
}
long currTime = System.currentTimeMillis();
System.out.println(i + " group: " + (currTime - lastTime));
lastTime = currTime;
}
long totalTime = System.currentTimeMillis() - startTime;
System.out.println("Total time: " + totalTime);
}
public int run(String[] args) throws IOException {
takeMeasurements();
return 0;
}
/**
* @param args
*/
public static void main(String[] args) throws Exception {
// To execute, run:
//
// ./bin/hadoop jar build/hadoop-0.20.1-dev-core.jar
// org.apache.hadoop.metrics.BenchmarkAPITrace 2> /dev/null
int res = ToolRunner.run(new Configuration(),
new BenchmarkAPITrace(), args);
System.exit(res);
}
}