/*
* 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.brooklyn.entity.java;
public class ExampleVanillaMainCpuHungry {
private static final int MAX_TIME_MILLIS = 100*1000;
private static final int CALCULATIONS_PER_CYCLE = 100000;
private static final int SLEEP_PER_CYCLE_MILLIS = 1;
public static void main(String[] args) throws Exception {
System.out.println("In ExampleVanillaMainCpuHungry.main");
long startTime = System.currentTimeMillis();
long count = 0;
double total = 0;
do {
for (int i = 0; i < CALCULATIONS_PER_CYCLE; i++) {
total += Math.sqrt(Math.random());
count++;
}
Thread.sleep(SLEEP_PER_CYCLE_MILLIS);
} while ((System.currentTimeMillis() - startTime) < MAX_TIME_MILLIS);
System.out.println("Did "+count+" random square roots, took "+(System.currentTimeMillis()-startTime)+"ms; total = "+total);
}
}