src/test/org/apache/jcs/TestJCSvHashtablePerf.java

package org.apache.jcs;

import java.util.Hashtable;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

public class TestJCSvHashtablePerf
    extends TestCase
{

  float ratioPut = 0;
  float ratioGet = 0;
  float target = 2.50f;

  int loops = 20;
  int tries = 50000;

  public TestJCSvHashtablePerf(String testName)
  {
    super(testName);
  }

  /**
   *  A unit test suite for JUnit
   *
   *@return    The test suite
   */
  public static Test suite()
  {
    return new TestSuite(TestJCSvHashtablePerf.class);
  }

  /**
   *  A unit test for JUnit
   *
   *@exception  Exception  Description of the Exception
   */
  public void testSimpleLoad() throws Exception
  {
    doWork();
    this.assertTrue(this.ratioPut < target);
    this.assertTrue(this.ratioGet < target);
  }

  public void doWork()
  {

    long start = 0;
    long end = 0;
    long time = 0;
    float tPer = 0;

    long putTotalJCS = 0;
    long getTotalJCS = 0;
    long putTotalHashtable = 0;
    long getTotalHashtable = 0;

    try
    {

      JCS.setConfigFilename("/TestJCSvHashtablePerf.ccf");
      JCS cache = JCS.getInstance("testCache1");

      for (int j = 0; j < loops; j++)
      {

        String name = "JCS      ";
        start = System.currentTimeMillis();
        for (int i = 0; i < tries; i++)
        {
          cache.put("key:" + i, "data" + i);
        }
        end = System.currentTimeMillis();
        time = end - start;
        putTotalJCS += time;
        tPer = Float.intBitsToFloat( (int) time) /
            Float.intBitsToFloat( (int) tries);
        System.out.println(name + " put time for " + tries + " = " + time +
                           "; millis per = " + tPer);

        start = System.currentTimeMillis();
        for (int i = 0; i < tries; i++)
        {
          cache.get("key:" + i);
        }
        end = System.currentTimeMillis();
        time = end - start;
        getTotalJCS += time;
        tPer = Float.intBitsToFloat( (int) time) /
            Float.intBitsToFloat( (int) tries);
        System.out.println(name + " get time for " + tries + " = " + time +
                           "; millis per = " + tPer);

        ///////////////////////////////////////////////////////////////
        name = "Hashtable";
        Hashtable cache2 = new Hashtable();
        start = System.currentTimeMillis();
        for (int i = 0; i < tries; i++)
        {
          cache2.put("key:" + i, "data" + i);
        }
        end = System.currentTimeMillis();
        time = end - start;
        putTotalHashtable += time;
        tPer = Float.intBitsToFloat( (int) time) /
            Float.intBitsToFloat( (int) tries);
        System.out.println(name + " put time for " + tries + " = " + time +
                           "; millis per = " + tPer);

        start = System.currentTimeMillis();
        for (int i = 0; i < tries; i++)
        {
          cache2.get("key:" + i);
        }
        end = System.currentTimeMillis();
        time = end - start;
        getTotalHashtable += time;
        tPer = Float.intBitsToFloat( (int) time) /
            Float.intBitsToFloat( (int) tries);
        System.out.println(name + " get time for " + tries + " = " + time +
                           "; millis per = " + tPer);

        System.out.println("\n");
      }

    }
    catch (Exception e)
    {
      e.printStackTrace(System.out);
      System.out.println(e);
    }

    long putAvJCS = putTotalJCS / loops;
    long getAvJCS = getTotalJCS / loops;
    long putAvHashtable = putTotalHashtable / loops;
    long getAvHashtable = getTotalHashtable / loops;

    System.out.println("Finished " + loops + " loops of " + tries +
                       " gets and puts");

    System.out.println("\n");
    System.out.println("Put average for JCS       = " + putAvJCS);
    System.out.println("Put average for Hashtable = " + putAvHashtable);
    ratioPut = Float.intBitsToFloat( (int) putAvJCS) /
        Float.intBitsToFloat( (int) putAvHashtable);
    System.out.println("JCS puts took " + ratioPut +
                       " times the Hashtable, the goal is <" + target + "x");

    System.out.println("\n");
    System.out.println("Get average for JCS       = " + getAvJCS);
    System.out.println("Get average for Hashtable = " + getAvHashtable);
    ratioGet = Float.intBitsToFloat( (int) getAvJCS) /
        Float.intBitsToFloat( (int) getAvHashtable);
    System.out.println("JCS gets took " + ratioGet +
                       " times the Hashtable, the goal is <" + target + "x");

  }

  public static void main(String args[])
  {
    TestJCSvHashtablePerf test = new TestJCSvHashtablePerf("command");
    test.doWork();
  }

}