readme.rm

Test Setup
----------

CPU: 2.2 GHz Intel Core i7
RAM: 16 GB 1333 MHz DDR 3
Disk: OCZ Vertex 4 128G

Java: Java SE 1.6 (MacOS X Default)
VM Arguments: -Xmx4096m
IDE: Eclipse 4.2.1 (M20120914-1800)
Tests: JUnit 4

Test Aim
--------

This test is assessing the performance hit on using double brace

Test Conclusions
----------------



Source output
-------------



Test Runs
---------

1. TEST_COUNT = 1,000

testExternalSimpleObjectInitiation 1763281041
Time taken: 14ms
testInternalSimpleObjectInitiation 10969598
Time taken: 14ms
testTripleExternalSimpleObjectInitiation 1412485250
Time taken: 30ms
testTripleInternalSimpleObjectInitiation 906199566
Time taken: 16ms
testExternalSimpleListInitiation 1062730578
Time taken: 10ms
testInternalSimpleListInitiation 1709834834
Time taken: 8ms

2. TEST_COUNT = 10,000

testExternalSimpleObjectInitiation 1891275584
Time taken: 83ms
testInternalSimpleObjectInitiation 1133736492
Time taken: 18ms
testTripleExternalSimpleObjectInitiation 1336225759
Time taken: 28ms
testTripleInternalSimpleObjectInitiation 1709834834
Time taken: 31ms
testExternalSimpleListInitiation 1857040122
Time taken: 28ms
testInternalSimpleListInitiation 302785728
Time taken: 11ms

3. TEST_COUNT = 100,000

testExternalSimpleObjectInitiation 1891275584
Time taken: 179ms
testInternalSimpleObjectInitiation 911767762
Time taken: 64ms
testTripleExternalSimpleObjectInitiation 301671635
Time taken: 202ms
testTripleInternalSimpleObjectInitiation 322714437
Time taken: 233ms
testExternalSimpleListInitiation 1793061098
Time taken: 174ms
testInternalSimpleListInitiation 456335625
Time taken: 132ms

4. TEST_COUNT = 1,000,000

testExternalSimpleObjectInitiation 1763281041
Time taken: 917ms
testInternalSimpleObjectInitiation 950233939
Time taken: 753ms
testTripleExternalSimpleObjectInitiation 1450554350
Time taken: 2043ms
testTripleInternalSimpleObjectInitiation 21845470
Time taken: 2232ms
testExternalSimpleListInitiation 876433694
Time taken: 1338ms
testInternalSimpleListInitiation 1506092990
Time taken: 2164ms

5. TEST_COUNT = 10,000,000

testExternalSimpleObjectInitiation 1763281041
Time taken: 7662ms
testInternalSimpleObjectInitiation 911435008
Time taken: 7478ms
testTripleExternalSimpleObjectInitiation 851272462
Time taken: 18295ms
testTripleInternalSimpleObjectInitiation 1763538368
Time taken: 27457ms
testExternalSimpleListInitiation 1180697045
Time taken: 15792ms
testInternalSimpleListInitiation 747136299
Time taken: 15549ms

SimpleInitiationTest.java

import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.Random;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class SimpleInitiationTest {

  private static final int TEST_COUNT = 1000000;
	
	private Random random = new Random();

	private long start;
	
	@Before
	public void setup() {
		start = Calendar.getInstance().getTimeInMillis();
	}
	
	@After
	public void tearUp() {
		long end = Calendar.getInstance().getTimeInMillis();
		System.out.println("Time taken: " + (end - start) + "ms");
	}
	
	@Test public void testExternalSimpleObjectInitiation() {
		System.out.println("testExternalSimpleObjectInitiation " + this.hashCode());
		List<SimpleObject> results = new ArrayList<SimpleObject>(TEST_COUNT);
		for (int i = 0; i < TEST_COUNT; i++) {
			SimpleObject victim = new SimpleObject();
			victim.setPage(random.nextInt());
			victim.setPageSize(random.nextInt());
			victim.setSomeData(Double.toString(random.nextDouble()));
			results.add(victim);
		}
	}
	
	@Test public void testInternalSimpleObjectInitiation() {
		System.out.println("testInternalSimpleObjectInitiation " + this.hashCode());
		List<SimpleObject> results = new ArrayList<SimpleObject>(TEST_COUNT);
		for (int i = 0; i < TEST_COUNT; i++) {
			SimpleObject victim = new SimpleObject() {
				{
					page = random.nextInt();
					pageSize = random.nextInt();
					someData = Double.toString(random.nextDouble());
				}
			};
			results.add(victim);
		}
	}
	

	
	@Test public void testTripleExternalSimpleObjectInitiation() {
		System.out.println("testTripleExternalSimpleObjectInitiation " + this.hashCode());
		List<SimpleObject> results = new ArrayList<SimpleObject>(TEST_COUNT);
		for (int i = 0; i < TEST_COUNT; i++) {
			SimpleObject victim = new SimpleObject();
			victim.setPage(random.nextInt());
			victim.setPageSize(random.nextInt());
			victim.setSomeData(Double.toString(random.nextDouble()));
			results.add(victim);
			SimpleObject victim2 = new SimpleObject();
			victim.setPage(random.nextInt());
			victim.setPageSize(random.nextInt());
			victim.setSomeData(Double.toString(random.nextDouble()));
			results.add(victim2);
			SimpleObject victim3 = new SimpleObject();
			victim.setPage(random.nextInt());
			victim.setPageSize(random.nextInt());
			victim.setSomeData(Double.toString(random.nextDouble()));
			results.add(victim3);
		}
	}
	
	@Test public void testTripleInternalSimpleObjectInitiation() {
		System.out.println("testTripleInternalSimpleObjectInitiation " + this.hashCode());
		List<SimpleObject> results = new ArrayList<SimpleObject>(TEST_COUNT);
		for (int i = 0; i < TEST_COUNT; i++) {
			SimpleObject victim = new SimpleObject() {
				{
					page = random.nextInt();
					pageSize = random.nextInt();
					someData = Double.toString(random.nextDouble());
				}
			};
			results.add(victim);
			SimpleObject victim2 = new SimpleObject() {
				{
					page = random.nextInt();
					pageSize = random.nextInt();
					someData = Double.toString(random.nextDouble());
				}
			};
			results.add(victim2);
			SimpleObject victim3 = new SimpleObject() {
				{
					page = random.nextInt();
					pageSize = random.nextInt();
					someData = Double.toString(random.nextDouble());
				}
			};
			results.add(victim3);
		}
	}
	
	@Test public void testExternalSimpleListInitiation() {
		System.out.println("testExternalSimpleListInitiation " + this.hashCode());
		List<SimpleList<String>> results = new ArrayList<SimpleList<String>>(TEST_COUNT);
		for (int i = 0; i < TEST_COUNT; i++) {
			SimpleList<String> victim = new SimpleList<String>();
			victim.add(Integer.toString(random.nextInt()));
			victim.add(Integer.toString(random.nextInt()));
			victim.add(Double.toString(random.nextDouble()));
			results.add(victim);
		}
	}
	
	@Test public void testInternalSimpleListInitiation() {
		System.out.println("testInternalSimpleListInitiation " + this.hashCode());
		List<SimpleList<String>> results = new ArrayList<SimpleList<String>>(TEST_COUNT);
		for (int i = 0; i < TEST_COUNT; i++) {
			SimpleList<String> victim = new SimpleList<String>() {
				private static final long serialVersionUID = 1L;
				{
					add(Integer.toString(random.nextInt()));
					add(Integer.toString(random.nextInt()));
					add(Double.toString(random.nextDouble()));
				}
			};
			results.add(victim);
		}
	}

}

SimpleList.java

import java.util.ArrayList;

public class SimpleList<T> extends ArrayList<T> {

  private static final long serialVersionUID = 1L;

}

SimpleObject.java

public class SimpleObject {

  protected int page;
	protected int pageSize;
	protected String someData;

	public int getPage() {
		return page;
	}

	public void setPage(int page) {
		this.page = page;
	}

	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}

	public String getSomeData() {
		return someData;
	}

	public void setSomeData(String someData) {
		this.someData = someData;
	}

}