Re: [Axis2] AXIOM vs. JDOM trivial perf test

Thu, 30 Mar 2006 15:57:19 -0800

Nice figures from JRockit! It's interesting that basically all the times are improved with JRockit, but the amount of improvement depends on the library. dom4j still beats OM by a comfortable margin even under JRockit, though (reformatted): 

Running dom4j with 10 passes on file docs/xmlformatter.xml (274920 bytes):
 Build-Walk mn=18870 Build-Walk av=19241 Write mn=13767 Write av=14002
Running dom4j with 10 passes on directory docs/soaps (30 files totaling 19407 bytes): 
 Build-Walk mn=1957  Build-Walk av=2110 Write mn=2049 Write av=2225

Running Axiom with 10 passes on file docs/xmlformatter.xml (274920 bytes):
 Build-Walk mn=24581 Build-Walk av=25434 Write mn=25519 Write av=26312
Running Axiom with 10 passes on directory docs/soaps (30 files totaling 19407 bytes): 
 Build-Walk mn=7492  Build-Walk av=8534 Write mn=8156 Write av=8653
I don't know why JRockit does so much better for some of the libraries. More efficient memory allocations and garbage collection, perhaps? I think dom4j has been more performance-designed than the other libraries, so I'm not surprised that it gains relatively little from JRockit on the large document run (build+walk is actually a little slower, but the JRockit write time is better). But even dom4j gains a lot on the small document test runs.
JRockit is definitely not cooperating on the attempts at garbage collection (I do repeated calls to System.gc() with waits in between, which generally works on Sun and IBM JVMs) - that's why the memory size figures are all garbage. I suspect what's going on is that the large memory size I used for the tests (512 MB initial and maximum memory) causes JRockit to mostly skip garbage collection and just use the large pool available, while Sun's JVM still does the cleanup. The libraries that generate the most garbage would gain the most from JRockit in this case, which seems to match the results. The small differences between the minimum times and average times for JRockit would also go along with this.
Incidentally, the version of the code I provided is Java 5+ only, since it uses System.nanoTime(). It's easy to tweak this to use System.currentTimeMillis() instead for older JVMs, but the precision of the timing values is naturally not as good that way. 

 - Dennis

Davanum Srinivas wrote:


Dennis,

what do you make of these test runs? as the name implies one is under
JDK15 the other one using JRockit.

thanks,
dims

On 3/30/06, Dennis Sosnoski <[EMAIL PROTECTED]> wrote:

You might want to just add this on to the one I created, Glen:
http://issues.apache.org/jira/browse/AXIS2-533 I include JDOM in my test
code there (using the Piccolo SAX parser), but didn't discuss the JDOM
results in the text since dom4j is generally faster and smaller.

 - Dennis

Davanum Srinivas wrote:


Glen,

Could up please send the bigfile.xml as well? Better to do it via JIRA.

thanks,
dims

On 3/30/06, Glen Daniels <[EMAIL PROTECTED]> wrote:



Hi folks:

The following is a quick test which takes an XML input file, parses it,
and walks the tree collecting all text content.  It does this using both
JDOM (note that you'll need the StAXBuilder and StAXTextModifier which
you can find at http://svn.woodstox.codehaus.org/utils/jdom/) and AXIOM,
100 times each, and then averages the timings.  The code is as close to
identical as I could get for the two packages.

For the file I'm working with (about 150K) I'm seeing AXIOM get an
average time around 180ms, whereas JDOM comes in at around 77ms.  The
strings match up.  This could be better, because frankly JDOM is way
easier to use. :)

I think it might be time to integrate some performance testing into our
builds, and to do some optimization on AXIOM.  I haven't yet looked at
comparing memory footprints, but may try to do that sometime soon.

--Glen

--------

import org.apache.axiom.om.OMXMLParserWrapper;
import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMNode;
import org.apache.axiom.om.impl.llom.factory.OMXMLBuilderFactory;
import org.jdom.input.StAXBuilder;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.Content;

import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLInputFactory;
import java.io.FileInputStream;
import java.util.Iterator;
import java.util.List;
import java.util.Date;

public class Test {
   static class Timer {
       long startTime;
       long stopTime;

       public void start() {
           startTime = new Date().getTime();
       }

       public long stop() {
           stopTime = new Date().getTime();
           return (stopTime - startTime);
       }
   }

   // A place to save the string length for comparison purposes
   static int strLen = 0;

   public static void main(String[] args) throws Exception {
       // Replace with any big file
       String FILENAME = "Scratch/bigfile.xml";

       int NUM_RUNS = 100;
       long accum = 0;

       for (int i = 0; i < NUM_RUNS; i++) {
           FileInputStream fis = new FileInputStream(FILENAME);
           XMLStreamReader parser =
XMLInputFactory.newInstance().createXMLStreamReader(fis);
           accum += runAXIOMTest(parser);
           parser.close();
           fis.close();
       }
       System.out.println("OM avg was " + (accum / NUM_RUNS) +
               " (" + strLen + ")");

       strLen = 0;
       accum = 0;

       for (int i = 0; i < NUM_RUNS; i++) {
           FileInputStream fis = new FileInputStream(FILENAME);
           XMLStreamReader parser =
XMLInputFactory.newInstance().createXMLStreamReader(fis);
           accum += runJDOMTest(parser);
           parser.close();
           fis.close();
       }
       System.out.println("JDOM avg was " + (accum / NUM_RUNS) +
               " (" + strLen + ")");
   }

   public static long runAXIOMTest(XMLStreamReader parser) throws
Exception {
       Timer t = new Timer();
       t.start();
       OMXMLParserWrapper builder =
OMXMLBuilderFactory.createStAXOMBuilder(OMAbstractFactory.getOMFactory(),
parser);
       OMElement root = builder.getDocumentElement();
       StringBuffer buf = new StringBuffer();
       genAXIOMString(root, buf);
       long elapsed = t.stop();
       if (strLen == 0) {
//            System.out.println("[" + buf.toString() + "]");
           strLen = buf.length();
       }
       return elapsed;
   }

   public static long runJDOMTest(XMLStreamReader parser) throws
Exception {
       Timer t = new Timer();
       t.start();
       StAXBuilder builder = new StAXBuilder();
       Document doc = builder.build(parser);
       StringBuffer buf = new StringBuffer();
       Element root = doc.getRootElement();
       genJDOMString(root, buf);
       long elapsed = t.stop();
       if (strLen == 0) {
//            System.out.println("[" + buf.toString() + "]");
           strLen = buf.length();
       }
       return elapsed;
   }

   // These two methods do the exact same thing, one for AXIOM and one
   // for JDOM.  Walk the tree and collect all the text.

   public static void genAXIOMString(OMElement el, StringBuffer buf) {
       buf.append(el.getText());
       Iterator i = el.getChildren();
       while (i.hasNext()) {
           OMNode node = (OMNode)i.next();
           if (node instanceof OMElement) {
               OMElement element = (OMElement) node;
               genAXIOMString(element, buf);
           }
       }
   }

   public static void genJDOMString(Element el, StringBuffer buf) {
       buf.append(el.getText());
       List children = el.getChildren();
       for (Iterator i = children.iterator(); i.hasNext();) {
           Content content = (Content)i.next();
           if (content instanceof Element) {
               Element element = (Element)content;
               genJDOMString(element, buf);
           }
       }
   }
}




--
Davanum Srinivas : http://wso2.com/blogs/






--
Davanum Srinivas : http://wso2.com/blogs/

------------------------------------------------------------------------

C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/jaxp.jar;lib/Piccolo.jar;lib/jdom.jar com.sosnoski.xmlbench.XMLBench -sb 
-u com.bluecast.xml.Piccolo jdom docs/init.xml docs/xmlformatter.xml docs/soaps
Running JDOM with 10 passes on file docs/init.xml (3604 bytes):
 Document has 51 elements, 82 attributes with 1215 characters of data, and 65 
content text segments with 380 characters of text
 Original text size was 3604, output text size was 3441
Build mn=1868   Build av=7267   Walk mn=23      Walk av=141     Build-Walk 
mn=1891
Build-Walk av=7408 Write mn=720 Write av=2053   Mod mn=125      Mod av=322
Elems=51        Conts=65        Attrs=82        Text ch=380     Attr ch=1215

Running JDOM with 10 passes on file docs/xmlformatter.xml (274920 bytes):
 Document has 5009 elements, 1 attributes with 1 characters of data, and 10017 
content text segments with 92468 characters of text
 Original text size was 274920, output text size was 274962
Build mn=33318  Build av=43830  Walk mn=703     Walk av=1492    Build-Walk 
mn=34021
Build-Walk av=45322 Write mn=15636 Write av=25741 Mod mn=6765   Mod av=7114
Elems=5009      Conts=10017     Attrs=1         Text ch=92468   Attr ch=1

Running JDOM with 10 passes on directory docs/soaps (30 files totaling 19407 
bytes):
 Document has 211 elements, 162 attributes with 2431 characters of data, and 72 
content text segments with 452 characters of text
 Original text size was 19407, output text size was 19521
Build mn=3975   Build av=6611   Walk mn=72      Walk av=104     Build-Walk 
mn=4047
Build-Walk av=6715 Write mn=2813 Write av=16344 Mod mn=115      Mod av=120
Elems=211       Conts=72        Attrs=162       Text ch=452     Attr ch=2431


C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/jaxp.jar;lib/Piccolo.jar;lib/dom4j.jar com.sosnoski.xmlbench.XMLBench -sb 
-u com.bluecast.xml.Piccolo dom4j docs/init.xml docs/xmlformatter.xml docs/soaps
Running dom4j with 10 passes on file docs/init.xml (3604 bytes):
 Document has 51 elements, 82 attributes with 1215 characters of data, and 65 
content text segments with 380 characters of text
 Original text size was 3604, output text size was 3329
Build mn=2390   Build av=6768   Walk mn=75      Walk av=262     Build-Walk 
mn=2465
Build-Walk av=7030 Write mn=656 Write av=2103   Mod mn=2        Mod av=2
Elems=51        Conts=65        Attrs=82        Text ch=380     Attr ch=1215

Running dom4j with 10 passes on file docs/xmlformatter.xml (274920 bytes):
 Document has 5009 elements, 1 attributes with 1 characters of data, and 10020 
content text segments with 92468 characters of text
 Original text size was 274920, output text size was 268945
Build mn=16091  Build av=17048  Walk mn=2146    Walk av=2225    Build-Walk 
mn=18237
Build-Walk av=19273 Write mn=14927 Write av=15583 Mod mn=2      Mod av=2
Elems=5009      Conts=10020     Attrs=1         Text ch=92468   Attr ch=1

Running dom4j with 10 passes on directory docs/soaps (30 files totaling 19407 
bytes):
 Document has 211 elements, 162 attributes with 2431 characters of data, and 72 
content text segments with 452 characters of text
 Original text size was 19407, output text size was 19450
Build mn=4975   Build av=7369   Walk mn=83      Walk av=94      Build-Walk 
mn=5058
Build-Walk av=7463 Write mn=2688 Write av=3134  Mod mn=3        Mod av=3
Elems=211       Conts=72        Attrs=162       Text ch=452     Attr ch=2431


C:\perf2>#java -Xms512M -Xmx512M -cp 
bin;lib/dom4j.jar;lib/stax-api-1.0.jar;lib/wstx-asl-2.8.2.jar 
com.sosnoski.xmlbench.XMLBench -sb dom4jstax docs/init.xml docs/xmlformatter.xml 
docs/soaps
'#java' is not recognized as an internal or external command,
operable program or batch file.

C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/xmlParserAPIs.jar;lib/xercesImpl.jar com.sosnoski.xmlbench.XMLBench -sb 
xerces2 docs/init.xml docs/xmlformatter.xml docs/soaps
Running Xerces2 DOM with 10 passes on file docs/init.xml (3604 bytes):
 Document has 51 elements, 84 attributes with 1269 characters of data, and 65 
content text segments with 380 characters of text
 Original text size was 3604, output text size was 3263
Build mn=3205   Build av=4825   Walk mn=59      Walk av=324     Build-Walk 
mn=3264
Build-Walk av=5149 Write mn=353 Write av=2660   Mod mn=272      Mod av=690
Elems=51        Conts=65        Attrs=84        Text ch=380     Attr ch=1269

Running Xerces2 DOM with 10 passes on file docs/xmlformatter.xml (274920 bytes):
 Document has 5009 elements, 1006 attributes with 104150 characters of data, 
and 10017 content text segments with 92468 characters of text
 Original text size was 274920, output text size was 268945
Build mn=17272  Build av=17925  Walk mn=1463    Walk av=1528    Build-Walk 
mn=18735
Build-Walk av=19453 Write mn=13993 Write av=14586 Mod mn=10135  Mod av=23954
Elems=5009      Conts=10017     Attrs=1006      Text ch=92468   Attr ch=104150

Running Xerces2 DOM with 10 passes on directory docs/soaps (30 files totaling 
19407 bytes):
 Document has 211 elements, 314 attributes with 7660 characters of data, and 72 
content text segments with 452 characters of text
 Original text size was 19407, output text size was 19416
Build mn=3696   Build av=5494   Walk mn=82      Walk av=100     Build-Walk 
mn=3778
Build-Walk av=5594 Write mn=2008 Write av=4665  Mod mn=158      Mod av=168
Elems=211       Conts=72        Attrs=314       Text ch=452     Attr ch=7660


C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/axiom-api-SNAPSHOT.jar;lib/axiom-impl-SNAPSHOT.jar;lib/stax-api-1.0.jar;lib/wstx-asl-2.8.2.jar
 com.sosnoski.xmlbench.XMLBench -sb axiom docs/init.xml docs/xmlformatter.xml 
docs/soaps
Running Axiom with 10 passes on file docs/init.xml (3604 bytes):
 Document has 51 elements, 82 attributes with 1215 characters of data, and 65 
content text segments with 380 characters of text
 Original text size was 3604, output text size was 3737
Build mn=440    Build av=3411   Walk mn=2385    Walk av=4784    Build-Walk 
mn=2825
Build-Walk av=8195 Write mn=1255 Write av=2874  Mod mn=2        Mod av=2
Elems=51        Conts=65        Attrs=82        Text ch=380     Attr ch=1215

Running Axiom with 10 passes on file docs/xmlformatter.xml (274920 bytes):
 Document has 5009 elements, 1 attributes with 1 characters of data, and 10017 
content text segments with 92468 characters of text
 Original text size was 274920, output text size was 269121
Build mn=378    Build av=507    Walk mn=28728   Walk av=53739   Build-Walk 
mn=29106
Build-Walk av=54246 Write mn=21561 Write av=30035 Mod mn=2      Mod av=2
Elems=5009      Conts=10017     Attrs=1         Text ch=92468   Attr ch=1

Running Axiom with 10 passes on directory docs/soaps (30 files totaling 19407 
bytes):
 Document has 211 elements, 162 attributes with 2431 characters of data, and 72 
content text segments with 452 characters of text
 Original text size was 19407, output text size was 20490
Build mn=10693  Build av=13045  Walk mn=1790    Walk av=2402    Build-Walk 
mn=12483
Build-Walk av=15447 Write mn=11645 Write av=15071 Mod mn=3      Mod av=3
Elems=211       Conts=72        Attrs=162       Text ch=452     Attr ch=2431


C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/jaxp.jar;lib/Piccolo.jar;lib/jdom.jar com.sosnoski.xmlbench.XMLBench 
-sbmp4n -u com.bluecast.xml.Piccolo jdom docs/init.xml docs/xmlformatter.xml 
docs/soaps
Running JDOM memory test with 4 passes on file docs/init.xml (3604 bytes):
Init mem=430528 Chg mem=417824  First sz=501664 Avg sz=18800    Walked sz=0
Avg+Walked sz=18800

Running JDOM memory test with 4 passes on file docs/xmlformatter.xml (274920 
bytes):
Init mem=848392 Chg mem=1656    First sz=1422536 Avg sz=1356328 Walked sz=0
Avg+Walked sz=1356328

Running JDOM memory test with 4 passes on directory docs/soaps (30 files 
totaling 19407 bytes):
Init mem=853352 Chg mem=2560    First sz=125624 Avg sz=53304    Walked sz=0
Avg+Walked sz=53304


C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/jaxp.jar;lib/Piccolo.jar;lib/dom4j.jar com.sosnoski.xmlbench.XMLBench 
-sbmp4n -u com.bluecast.xml.Piccolo dom4j docs/init.xml docs/xmlformatter.xml 
docs/soaps
Running dom4j memory test with 4 passes on file docs/init.xml (3604 bytes):
Init mem=430536 Chg mem=427448  First sz=500032 Avg sz=15264    Walked sz=0
Avg+Walked sz=15264

Running dom4j memory test with 4 passes on file docs/xmlformatter.xml (274920 
bytes):
Init mem=858024 Chg mem=3856    First sz=1032496 Avg sz=971976  Walked sz=0
Avg+Walked sz=971976

Running dom4j memory test with 4 passes on directory docs/soaps (30 files 
totaling 19407 bytes):
Init mem=865184 Chg mem=7944    First sz=103824 Avg sz=33768    Walked sz=0
Avg+Walked sz=33768


C:\perf2>#java -Xms512M -Xmx512M -cp 
bin;lib/dom4j.jar;lib/stax-api-1.0.jar;lib/wstx-asl-2.8.2.jar 
com.sosnoski.xmlbench.XMLBench -sbmp4n dom4jstax docs/init.xml 
docs/xmlformatter.xml docs/soaps
'#java' is not recognized as an internal or external command,
operable program or batch file.

C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/xmlParserAPIs.jar;lib/xercesImpl.jar com.sosnoski.xmlbench.XMLBench 
-sbmp4n xerces2 docs/init.xml docs/xmlformatter.xml docs/soaps
Running Xerces2 DOM memory test with 4 passes on file docs/init.xml (3604 
bytes):
Init mem=430096 Chg mem=106328  First sz=151064 Avg sz=21824    Walked sz=0
Avg+Walked sz=21824

Running Xerces2 DOM memory test with 4 passes on file docs/xmlformatter.xml 
(274920 bytes):
Init mem=536464 Chg mem=0       First sz=1619904 Avg sz=1602008 Walked sz=0
Avg+Walked sz=1602008

Running Xerces2 DOM memory test with 4 passes on directory docs/soaps (30 files 
totaling 19407 bytes):
Init mem=539768 Chg mem=0       First sz=105336 Avg sz=78696    Walked sz=0
Avg+Walked sz=78696


C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/axiom-api-SNAPSHOT.jar;lib/axiom-impl-SNAPSHOT.jar;lib/stax-api-1.0.jar;lib/wstx-asl-2.8.2.jar
 com.sosnoski.xmlbench.XMLBench -sbmp4n axiom docs/init.xml docs/xmlformatter.xml 
docs/soaps
Running Axiom memory test with 4 passes on file docs/init.xml (3604 bytes):
Init mem=457736 Chg mem=51760   First sz=64272  Avg sz=14992    Walked sz=35965
Avg+Walked sz=50957

Running Axiom memory test with 4 passes on file docs/xmlformatter.xml (274920 
bytes):
Init mem=509536 Chg mem=928     First sz=15192  Avg sz=15261    Walked 
sz=2071960
Avg+Walked sz=2087221

Running Axiom memory test with 4 passes on directory docs/soaps (30 files 
totaling 19407 bytes):
Init mem=513768 Chg mem=1640    First sz=451960 Avg sz=449760   Walked sz=103520
Avg+Walked sz=553280


C:\perf2>


------------------------------------------------------------------------

C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/jaxp.jar;lib/Piccolo.jar;lib/jdom.jar com.sosnoski.xmlbench.XMLBench -sb 
-u com.bluecast.xml.Piccolo jdom docs/init.xml docs/xmlformatter.xml docs/soaps
Running JDOM with 10 passes on file docs/init.xml (3604 bytes):
 Document has 51 elements, 82 attributes with 1215 characters of data, and 65 
content text segments with 380 characters of text
 Original text size was 3604, output text size was 3441
Build mn=315    Build av=340    Walk mn=9       Walk av=10      Build-Walk 
mn=324
Build-Walk av=350 Write mn=286  Write av=329    Mod mn=35       Mod av=36
Elems=51        Conts=65        Attrs=82        Text ch=380     Attr ch=1215

Running JDOM with 10 passes on file docs/xmlformatter.xml (274920 bytes):
 Document has 5009 elements, 1 attributes with 1 characters of data, and 10017 
content text segments with 92468 characters of text
 Original text size was 274920, output text size was 274962
Build mn=36055  Build av=37926  Walk mn=2097    Walk av=2190    Build-Walk 
mn=38152
Build-Walk av=40116 Write mn=21226 Write av=23061 Mod mn=11950  Mod av=12656
Elems=5009      Conts=10017     Attrs=1         Text ch=92468   Attr ch=1

Running JDOM with 10 passes on directory docs/soaps (30 files totaling 19407 
bytes):
 Document has 211 elements, 162 attributes with 2431 characters of data, and 72 
content text segments with 452 characters of text
 Original text size was 19407, output text size was 19521
Build mn=2727   Build av=3090   Walk mn=57      Walk av=100     Build-Walk 
mn=2784
Build-Walk av=3190 Write mn=2642 Write av=3037  Mod mn=169      Mod av=180
Elems=211       Conts=72        Attrs=162       Text ch=452     Attr ch=2431


C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/jaxp.jar;lib/Piccolo.jar;lib/dom4j.jar com.sosnoski.xmlbench.XMLBench -sb 
-u com.bluecast.xml.Piccolo dom4j docs/init.xml docs/xmlformatter.xml docs/soaps
Running dom4j with 10 passes on file docs/init.xml (3604 bytes):
 Document has 51 elements, 82 attributes with 1215 characters of data, and 65 
content text segments with 380 characters of text
 Original text size was 3604, output text size was 3329
Build mn=273    Build av=284    Walk mn=15      Walk av=15      Build-Walk 
mn=288
Build-Walk av=299 Write mn=234  Write av=266    Mod mn=2        Mod av=2
Elems=51        Conts=65        Attrs=82        Text ch=380     Attr ch=1215

Running dom4j with 10 passes on file docs/xmlformatter.xml (274920 bytes):
 Document has 5009 elements, 1 attributes with 1 characters of data, and 10020 
content text segments with 92468 characters of text
 Original text size was 274920, output text size was 268945
Build mn=17597  Build av=17924  Walk mn=1273    Walk av=1317    Build-Walk 
mn=18870
Build-Walk av=19241 Write mn=13767 Write av=14002 Mod mn=2      Mod av=2
Elems=5009      Conts=10020     Attrs=1         Text ch=92468   Attr ch=1

Running dom4j with 10 passes on directory docs/soaps (30 files totaling 19407 
bytes):
 Document has 211 elements, 162 attributes with 2431 characters of data, and 72 
content text segments with 452 characters of text
 Original text size was 19407, output text size was 19450
Build mn=1921   Build av=2070   Walk mn=36      Walk av=40      Build-Walk 
mn=1957
Build-Walk av=2110 Write mn=2049 Write av=2225  Mod mn=2        Mod av=2
Elems=211       Conts=72        Attrs=162       Text ch=452     Attr ch=2431


C:\perf2>#java -Xms512M -Xmx512M -cp 
bin;lib/dom4j.jar;lib/stax-api-1.0.jar;lib/wstx-asl-2.8.2.jar 
com.sosnoski.xmlbench.XMLBench -sb dom4jstax docs/init.xml docs/xmlformatter.xml 
docs/soaps
'#java' is not recognized as an internal or external command,
operable program or batch file.

C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/xmlParserAPIs.jar;lib/xercesImpl.jar com.sosnoski.xmlbench.XMLBench -sb 
xerces2 docs/init.xml docs/xmlformatter.xml docs/soaps
Running Xerces2 DOM with 10 passes on file docs/init.xml (3604 bytes):
 Document has 51 elements, 84 attributes with 1269 characters of data, and 65 
content text segments with 380 characters of text
 Original text size was 3604, output text size was 3263
Build mn=323    Build av=357    Walk mn=24      Walk av=24      Build-Walk 
mn=347
Build-Walk av=381 Write mn=145  Write av=150    Mod mn=29       Mod av=31
Elems=51        Conts=65        Attrs=84        Text ch=380     Attr ch=1269

Running Xerces2 DOM with 10 passes on file docs/xmlformatter.xml (274920 bytes):
 Document has 5009 elements, 1006 attributes with 104150 characters of data, 
and 10017 content text segments with 92468 characters of text
 Original text size was 274920, output text size was 268945
Build mn=18384  Build av=18824  Walk mn=1239    Walk av=1336    Build-Walk 
mn=19623
Build-Walk av=20160 Write mn=11704 Write av=11998 Mod mn=11572  Mod av=12464
Elems=5009      Conts=10017     Attrs=1006      Text ch=92468   Attr ch=104150

Running Xerces2 DOM with 10 passes on directory docs/soaps (30 files totaling 
19407 bytes):
 Document has 211 elements, 314 attributes with 7660 characters of data, and 72 
content text segments with 452 characters of text
 Original text size was 19407, output text size was 19416
Build mn=2053   Build av=2201   Walk mn=69      Walk av=81      Build-Walk 
mn=2122
Build-Walk av=2282 Write mn=1306 Write av=1439  Mod mn=155      Mod av=161
Elems=211       Conts=72        Attrs=314       Text ch=452     Attr ch=7660


C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/axiom-api-SNAPSHOT.jar;lib/axiom-impl-SNAPSHOT.jar;lib/stax-api-1.0.jar;lib/wstx-asl-2.8.2.jar
 com.sosnoski.xmlbench.XMLBench -sb axiom docs/init.xml docs/xmlformatter.xml 
docs/soaps
Running Axiom with 10 passes on file docs/init.xml (3604 bytes):
 Document has 51 elements, 82 attributes with 1215 characters of data, and 65 
content text segments with 380 characters of text
 Original text size was 3604, output text size was 3737
Build mn=152    Build av=256    Walk mn=275     Walk av=303     Build-Walk 
mn=427
Build-Walk av=559 Write mn=566  Write av=663    Mod mn=2        Mod av=2
Elems=51        Conts=65        Attrs=82        Text ch=380     Attr ch=1215

Running Axiom with 10 passes on file docs/xmlformatter.xml (274920 bytes):
 Document has 5009 elements, 1 attributes with 1 characters of data, and 10017 
content text segments with 92468 characters of text
 Original text size was 274920, output text size was 269121
Build mn=158    Build av=178    Walk mn=24423   Walk av=25256   Build-Walk 
mn=24581
Build-Walk av=25434 Write mn=25519 Write av=26312 Mod mn=2      Mod av=2
Elems=5009      Conts=10017     Attrs=1         Text ch=92468   Attr ch=1

Running Axiom with 10 passes on directory docs/soaps (30 files totaling 19407 
bytes):
 Document has 211 elements, 162 attributes with 2431 characters of data, and 72 
content text segments with 452 characters of text
 Original text size was 19407, output text size was 20490
Build mn=6136   Build av=6866   Walk mn=1356    Walk av=1668    Build-Walk 
mn=7492
Build-Walk av=8534 Write mn=8156 Write av=8653  Mod mn=2        Mod av=2
Elems=211       Conts=72        Attrs=162       Text ch=452     Attr ch=2431


C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/jaxp.jar;lib/Piccolo.jar;lib/jdom.jar com.sosnoski.xmlbench.XMLBench 
-sbmp4n -u com.bluecast.xml.Piccolo jdom docs/init.xml docs/xmlformatter.xml 
docs/soaps
Running JDOM memory test with 4 passes on file docs/init.xml (3604 bytes):
Init mem=516152 Chg mem=533480  First sz=700392 Avg sz=-9522    Walked sz=-19786
Avg+Walked sz=-29308

Running JDOM memory test with 4 passes on file docs/xmlformatter.xml (274920 
bytes):
Init mem=1051736 Chg mem=1512   First sz=1479400 Avg sz=6157834 Walked 
sz=-6157954
Avg+Walked sz=-120

Running JDOM memory test with 4 passes on directory docs/soaps (30 files 
totaling 19407 bytes):
Init mem=1051656 Chg mem=6816   First sz=293616 Avg sz=5202     Walked sz=-61760
Avg+Walked sz=-56558


C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/jaxp.jar;lib/Piccolo.jar;lib/dom4j.jar com.sosnoski.xmlbench.XMLBench 
-sbmp4n -u com.bluecast.xml.Piccolo dom4j docs/init.xml docs/xmlformatter.xml 
docs/soaps
Running dom4j memory test with 4 passes on file docs/init.xml (3604 bytes):
Init mem=516160 Chg mem=531680  First sz=687664 Avg sz=-13730   Walked sz=-15917
Avg+Walked sz=-29647

Running dom4j memory test with 4 passes on file docs/xmlformatter.xml (274920 
bytes):
Init mem=1041864 Chg mem=7344   First sz=1168264 Avg sz=1105069 Walked 
sz=-1139941
Avg+Walked sz=-34872

Running dom4j memory test with 4 passes on directory docs/soaps (30 files 
totaling 19407 bytes):
Init mem=1050672 Chg mem=13352  First sz=178392 Avg sz=13842    Walked sz=-37320
Avg+Walked sz=-23478


C:\perf2>#java -Xms512M -Xmx512M -cp 
bin;lib/dom4j.jar;lib/stax-api-1.0.jar;lib/wstx-asl-2.8.2.jar 
com.sosnoski.xmlbench.XMLBench -sbmp4n dom4jstax docs/init.xml 
docs/xmlformatter.xml docs/soaps
'#java' is not recognized as an internal or external command,
operable program or batch file.

C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/xmlParserAPIs.jar;lib/xercesImpl.jar com.sosnoski.xmlbench.XMLBench 
-sbmp4n xerces2 docs/init.xml docs/xmlformatter.xml docs/soaps
Running Xerces2 DOM memory test with 4 passes on file docs/init.xml (3604 
bytes):
Init mem=515616 Chg mem=230808  First sz=400208 Avg sz=-24584   Walked sz=-29778
Avg+Walked sz=-54362

Running Xerces2 DOM memory test with 4 passes on file docs/xmlformatter.xml 
(274920 bytes):
Init mem=728464 Chg mem=6448    First sz=1682440 Avg sz=1657152 Walked 
sz=-2211264
Avg+Walked sz=-554112

Running Xerces2 DOM memory test with 4 passes on directory docs/soaps (30 files 
totaling 19407 bytes):
Init mem=733768 Chg mem=3088    First sz=141112 Avg sz=72626    Walked sz=-87696
Avg+Walked sz=-15070


C:\perf2>java -Xms512M -Xmx512M -cp 
bin;lib/axiom-api-SNAPSHOT.jar;lib/axiom-impl-SNAPSHOT.jar;lib/stax-api-1.0.jar;lib/wstx-asl-2.8.2.jar
 com.sosnoski.xmlbench.XMLBench -sbmp4n axiom docs/init.xml docs/xmlformatter.xml 
docs/soaps
Running Axiom memory test with 4 passes on file docs/init.xml (3604 bytes):
Init mem=576560 Chg mem=67832   First sz=166328 Avg sz=-19077   Walked sz=-13754
Avg+Walked sz=-32831

Running Axiom memory test with 4 passes on file docs/xmlformatter.xml (274920 
bytes):
Init mem=644584 Chg mem=1272    First sz=17320  Avg sz=14218    Walked sz=-16976
Avg+Walked sz=-2758

Running Axiom memory test with 4 passes on directory docs/soaps (30 files 
totaling 19407 bytes):
Init mem=649512 Chg mem=2552    First sz=450704 Avg sz=473432   Walked 
sz=-615925
Avg+Walked sz=-142493


C:\perf2>

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