That is good news. Just for interest, which JVM version are you using?
On 2/16/06, Aaron Smuts <[EMAIL PROTECTED]> wrote:
>
> I just built both EHCache and JCS from head,
> configured both similarly and ran multiple put / get
> rounds of 50,000. JCS, using the default LRU Memory
> Cache, was nearly twice as fast as EHCache in multiple
> trials for both puts and gets. I have the log levels
> for both set at info. I would like to verify my
> results, since they completely contradict the
> information on the EHCache site. From what I can tell
> so far, JCS is significantly faster than EHCache.
>
> Since, neither will be a relevant bottleneck, it may
> be beside the point. . . . I will run more tests to
> confirm.
>
> Here is the data:
>
> JCS put time for 50000 = 651; millis per =
> 0.01302
> JCS get time for 50000 = 160; millis per =
> 0.0032
> EHCache put time for 50000 = 481; millis per =
> 0.00962
> EHCache get time for 50000 = 110; millis per =
> 0.0022
>
>
> JCS put time for 50000 = 240; millis per =
> 0.0048
> JCS get time for 50000 = 90; millis per = 0.0018
> EHCache put time for 50000 = 491; millis per =
> 0.00982
> EHCache get time for 50000 = 120; millis per =
> 0.0024
>
>
> JCS put time for 50000 = 241; millis per =
> 0.00482
> JCS get time for 50000 = 80; millis per = 0.0016
> EHCache put time for 50000 = 551; millis per =
> 0.01102
> EHCache get time for 50000 = 110; millis per =
> 0.0022
>
>
> JCS put time for 50000 = 240; millis per =
> 0.0048
> JCS get time for 50000 = 90; millis per = 0.0018
> EHCache put time for 50000 = 481; millis per =
> 0.00962
> EHCache get time for 50000 = 130; millis per =
> 0.0026
>
>
> JCS put time for 50000 = 230; millis per =
> 0.0046
> JCS get time for 50000 = 181; millis per =
> 0.00362
> EHCache put time for 50000 = 520; millis per =
> 0.0104
> EHCache get time for 50000 = 101; millis per =
> 0.00202
>
>
> JCS put time for 50000 = 220; millis per =
> 0.0044
> JCS get time for 50000 = 90; millis per = 0.0018
> EHCache put time for 50000 = 641; millis per =
> 0.01282
> EHCache get time for 50000 = 110; millis per =
> 0.0022
>
>
> JCS put time for 50000 = 250; millis per =
> 0.0050
> JCS get time for 50000 = 121; millis per =
> 0.00242
> EHCache put time for 50000 = 590; millis per =
> 0.0118
> EHCache get time for 50000 = 101; millis per =
> 0.00202
>
>
> JCS put time for 50000 = 260; millis per =
> 0.0052
> JCS get time for 50000 = 100; millis per =
> 0.0020
> EHCache put time for 50000 = 581; millis per =
> 0.01162
> EHCache get time for 50000 = 100; millis per =
> 0.0020
>
>
> JCS put time for 50000 = 290; millis per =
> 0.0058
> JCS get time for 50000 = 121; millis per =
> 0.00242
> EHCache put time for 50000 = 570; millis per =
> 0.0114
> EHCache get time for 50000 = 121; millis per =
> 0.00242
>
>
> JCS put time for 50000 = 210; millis per =
> 0.0042
> JCS get time for 50000 = 120; millis per =
> 0.0024
> EHCache put time for 50000 = 561; millis per =
> 0.01122
> EHCache get time for 50000 = 130; millis per =
> 0.0026
>
>
> JCS put time for 50000 = 250; millis per =
> 0.0050
> JCS get time for 50000 = 151; millis per =
> 0.00302
> EHCache put time for 50000 = 560; millis per =
> 0.0112
> EHCache get time for 50000 = 111; millis per =
> 0.00222
>
>
> JCS put time for 50000 = 250; millis per =
> 0.0050
> JCS get time for 50000 = 100; millis per =
> 0.0020
> EHCache put time for 50000 = 711; millis per =
> 0.01422
> EHCache get time for 50000 = 100; millis per =
> 0.0020
>
>
> JCS put time for 50000 = 251; millis per =
> 0.00502
> JCS get time for 50000 = 90; millis per = 0.0018
> EHCache put time for 50000 = 511; millis per =
> 0.01022
> EHCache get time for 50000 = 90; millis per = 0.0018
>
>
> JCS put time for 50000 = 220; millis per =
> 0.0044
> JCS get time for 50000 = 100; millis per =
> 0.0020
> EHCache put time for 50000 = 491; millis per =
> 0.00982
> EHCache get time for 50000 = 90; millis per = 0.0018
>
>
> JCS put time for 50000 = 230; millis per =
> 0.0046
> JCS get time for 50000 = 80; millis per = 0.0016
> EHCache put time for 50000 = 201; millis per =
> 0.00402
> EHCache get time for 50000 = 390; millis per =
> 0.0078
>
>
> JCS put time for 50000 = 201; millis per =
> 0.00402
> JCS get time for 50000 = 120; millis per =
> 0.0024
> EHCache put time for 50000 = 180; millis per =
> 0.0036
> EHCache get time for 50000 = 411; millis per =
> 0.00822
>
>
> JCS put time for 50000 = 210; millis per =
> 0.0042
> JCS get time for 50000 = 100; millis per =
> 0.0020
> EHCache put time for 50000 = 210; millis per =
> 0.0042
> EHCache get time for 50000 = 381; millis per =
> 0.00762
>
>
> JCS put time for 50000 = 240; millis per =
> 0.0048
> JCS get time for 50000 = 90; millis per = 0.0018
> EHCache put time for 50000 = 211; millis per =
> 0.00422
> EHCache get time for 50000 = 410; millis per =
> 0.0082
>
>
> JCS put time for 50000 = 221; millis per =
> 0.00442
> JCS get time for 50000 = 80; millis per = 0.0016
> EHCache put time for 50000 = 210; millis per =
> 0.0042
> EHCache get time for 50000 = 411; millis per =
> 0.00822
>
>
> JCS put time for 50000 = 220; millis per =
> 0.0044
> JCS get time for 50000 = 80; millis per = 0.0016
> EHCache put time for 50000 = 190; millis per =
> 0.0038
> EHCache get time for 50000 = 411; millis per =
> 0.00822
>
>
> Finished 20 loops of 50000 gets and puts
>
>
> Put average for JCS = 256
> Put average for EHCache = 447
> JCS puts took 0.57270694 times the EHCache ,
> the goal is <1.0x
>
>
> Get average for JCS = 107
> Get average for EHCache = 196
> JCS gets took 0.54591835 times the EHCache ,
> the goal is <1.0x
>
>
> Here is the test class:
>
>
>
> package org.apache.jcs;
>
> import junit.framework.TestCase;
> import net.sf.ehcache.Cache;
> import net.sf.ehcache.CacheManager;
> import net.sf.ehcache.Element;
>
> import org.apache.commons.logging.Log;
> import org.apache.commons.logging.LogFactory;
> import org.apache.jcs.engine.CompositeCacheAttributes;
> import
> org.apache.jcs.engine.behavior.ICompositeCacheAttributes;
> import org.apache.jcs.utils.struct.LRUMap;
>
> /**
> * Compare JCS vs ehcache performance.
> *
> * @author Aaron Smuts
> *
> */
> public class JCSvsEHCachePerformanceTest
> extends TestCase
> {
>
> float ratioPut = 0;
>
> float ratioGet = 0;
>
> // the jcs to competitor
> float target = 1.0f;
>
> int loops = 20;
>
> int tries = 50000;
>
> /**
> * Compare performance between JCS and EHCache.
> Fail if JCS is not as fast.
> * Print the ratio.
> *
> * @throws Exception
> *
> */
> public void testJCSvsEHCache()
> throws Exception
> {
>
> Log log = LogFactory.getLog( LRUMap.class );
> if ( log.isDebugEnabled() )
> {
> System.out.println( "The log level must be
> at info or above for the a performance test." );
> return;
> }
>
> doWork();
>
> assertTrue( this.ratioPut < target );
> assertTrue( this.ratioGet < target );
>
> }
>
> /**
> * This runs a series of gets and puts for both
> JCS and EHCache. The test
> * will fail if JCS is not faster.
> *
> * @throws Exception
> *
> */
> public void doWork()
> throws Exception
> {
>
> int maxSize = 1000000;
>
> // create the two caches.
> CacheManager ehMgr =
> CacheManager.getInstance();
> // Create an ehcache with a max size of
> maxSize, no swap, with items
> // that can expire, with maximum idle time to
> live of 500 seconds, and
> // maximum idel time of 500 seconds.
> Cache eh = new Cache( "testJCSvsEHCache",
> maxSize, false, false, 500, 500 );
> ehMgr.addCache( eh );
>
> // Create a similarly configured JCS that uses
> the LRU memory cache.
> // maxSize elements that are not eternal. No
> disk cache is configured.
> ICompositeCacheAttributes cattr = new
> CompositeCacheAttributes();
> cattr.setMaxObjects( maxSize );
> JCS jcs = JCS.getInstance( "testJCSvsEHCache"
> );
>
> // run settings
> long start = 0;
> long end = 0;
> long time = 0;
> float tPer = 0;
>
> long putTotalJCS = 0;
> long getTotalJCS = 0;
> long putTotalEHCache = 0;
> long getTotalEHCache = 0;
>
> String jcsDisplayName = "JCS";
> String ehCacheDisplayName = "";
>
> try
> {
> for ( int j = 0; j < loops; j++ )
> {
>
> jcsDisplayName = "JCS ";
> start = System.currentTimeMillis();
> for ( int i = 0; i < tries; i++ )
> {
> jcs.put( "key:" + i, "data" + i );
> }
> end = System.currentTimeMillis();
> time = end - start;
> putTotalJCS += time;
> tPer = Float.intBitsToFloat( (int)
> time ) / Float.intBitsToFloat( tries );
> System.out
> .println( jcsDisplayName + " put
> time for " + tries + " = " + time + "; millis per = "
> + tPer );
>
> start = System.currentTimeMillis();
> for ( int i = 0; i < tries; i++ )
> {
> jcs.get( "key:" + i );
> }
> end = System.currentTimeMillis();
> time = end - start;
> getTotalJCS += time;
> tPer = Float.intBitsToFloat( (int)
> time ) / Float.intBitsToFloat( tries );
> System.out
> .println( jcsDisplayName + " get
> time for " + tries + " = " + time + "; millis per = "
> + tPer );
>
> //
> /////////////////////////////////////////////////////////////
> ehCacheDisplayName = "EHCache ";
>
> start = System.currentTimeMillis();
> for ( int i = 0; i < tries; i++ )
> {
> Element ehElm = new Element(
> "key:" + i, "data" + i );
>
> eh.put( ehElm );
> }
> end = System.currentTimeMillis();
> time = end - start;
> putTotalEHCache += time;
> tPer = Float.intBitsToFloat( (int)
> time ) / Float.intBitsToFloat( tries );
> System.out.println( ehCacheDisplayName
> + " put time for " + tries + " = " + time + "; millis
> per = "
> + tPer );
>
> start = System.currentTimeMillis();
> for ( int i = 0; i < tries; i++ )
> {
> eh.get( "key:" + i );
> }
> end = System.currentTimeMillis();
> time = end - start;
> getTotalEHCache += time;
> tPer = Float.intBitsToFloat( (int)
> time ) / Float.intBitsToFloat( tries );
> System.out.println( ehCacheDisplayName
> + " 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 = putTotalEHCache / loops;
> long getAvHashtable = getTotalEHCache / loops;
>
> System.out.println( "Finished " + loops + "
> loops of " + tries + " gets and puts" );
>
> System.out.println( "\n" );
> System.out.println( "Put average for " +
> jcsDisplayName + " = " + putAvJCS );
> System.out.println( "Put average for " +
> ehCacheDisplayName + " = " + putAvHashtable );
> ratioPut = Float.intBitsToFloat( (int)
> putAvJCS ) / Float.intBitsToFloat( (int)
> putAvHashtable );
> System.out.println( jcsDisplayName + " puts
> took " + ratioPut + " times the " + ehCacheDisplayName
> + ", the goal is <" + target + "x" );
>
> System.out.println( "\n" );
> System.out.println( "Get average for " +
> jcsDisplayName + " = " + getAvJCS );
> System.out.println( "Get average for " +
> ehCacheDisplayName + " = " + getAvHashtable );
> ratioGet = Float.intBitsToFloat( (int)
> getAvJCS ) / Float.intBitsToFloat( (int)
> getAvHashtable );
> System.out.println( jcsDisplayName + " gets
> took " + ratioGet + " times the " + ehCacheDisplayName
> + ", the goal is <" + target + "x" );
>
> }
>
> }
>
>
>
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