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From Egor Pervuninski <...@quorus.ru>
Subject Re: Apache XML Security 1.2 for Java
Date Tue, 18 Jan 2005 06:14:15 GMT
Hello Raul,

I am using Microsoft Windows 2000 Professional 5.00.2195 with  
ServicePack 4 and "Russian" locale.
I have Celeron 1200MHz machine with 512Mb RAM.

I have tried to run java with -server option using two different JREs 
but results were the same.

Here is the output of java -version for j2sdk 1.5.0:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode)

Results with -client:
1.1: time spent 921 ms
1.2: time spent 27710 ms
Results with -server:
1.1: time spent 2374 ms
1.2: time spent 26438 ms

Here is the output of java -version for j2sdk 1.4.2:
java version "1.4.2_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)

Results with -client:
1.1: time spent 901 ms
1.2: time spent 23014 ms
Results with -server:
1.1: time spent 2013 ms
1.2: time spent 23014 ms

I will try to profile the library in my spare time and post the result.

Regards,
Egor Pervuninski
egor {dot} pervuninski {at} gmail {dot} com

Raul Benito wrote:

>Hi Egor,
>
>
>  First of all sorry for not answering your request sooner. Regarding
>your problem, it seems that the way we transform the stream to UTF8 in
>1.2(the library do the conversion itself) is slower in your case to
>the way it was done 1.1(we use classes given by the SDK). This is
>weird because, I made a lot of test regarding it and was always faster
>doing in the library that letting the work for the API. I will
>investigate this a little more, but I´ll need more information
>regarding your runtime: What JRE are you using, in what OS, in what
>locale, and of course are you testing with JIT enable(i.e. are you
>using -server or -client).
>
>Regards,
>
>Raul
>http://r-bg.com
>
>On Tue, 11 Jan 2005 18:38:40 +0500, Egor Pervuninski <pea@quorus.ru> wrote:
>  
>
>>Hello,
>>
>>Sure, here it is.
>>
>>## Davanum Srinivas : Tue, 11 Jan 2005 08:28:24 -0500
>>
>>DS>  Can you please post your test.xml as well?  thanks, dims
>>DS>
>>DS> On Tue, 11 Jan 2005 18:31:18 +0500, Egor Pervuninski
>>DS> <pea@quorus.ru> wrote:
>>    
>>
>>>>Hello,
>>>>
>>>>Recently I tried to upgrade my project to use new Apache XML
>>>>Security 1.2 for Java and found that now the library does c14n much
>>>>MUCH more slowly than it was with 1.1.
>>>>
>>>>Here is a simple test:
>>>>
>>>>import javax.xml.parsers.DocumentBuilder; import
>>>>javax.xml.parsers.DocumentBuilderFactory;
>>>>
>>>>import org.apache.commons.lang.time.StopWatch; import
>>>>org.apache.xml.security.c14n.Canonicalizer; import
>>>>org.w3c.dom.Document; import org.xml.sax.InputSource;
>>>>
>>>>public class Test { private final static int REPEAT = 1000;
>>>>
>>>>private StopWatch timer = new StopWatch(); private Canonicalizer
>>>>canon =
>>>>Canonicalizer.getInstance(Canonicalizer.ALGO_ID_C14N_OMIT_COMMENTS);
>>>>private Document document;
>>>>
>>>>public Test(String file) throws Exception { DocumentBuilderFactory
>>>>factory = DocumentBuilderFactory.newInstance();
>>>>factory.setNamespaceAware(true); factory.setValidating(false);
>>>>DocumentBuilder builder = factory.newDocumentBuilder(); document =
>>>>builder.parse(new InputSource(file)); }
>>>>
>>>>public void runTest() throws Exception { timer.start(); for (int i
>>>>= 0; i < REPEAT; i++) { canon.canonicalizeSubtree(document); }
>>>>timer.stop(); System.out.println("time spent " +
>>>>String.valueOf(timer.getTime()) + " ms"); }
>>>>
>>>>public static void main(String[] args) throws Exception {
>>>>org.apache.xml.security.Init.init(); Test test = new Test(args[0]);
>>>>test.runTest(); } }
>>>>
>>>>Just drop commons-lang-2.0.jar, commons-logging.jar,
>>>>xercesImpl.jar, xml-apis.jar and xmlsec.jarto the classpath and run
>>>>java Test File.xml.
>>>>
>>>>Version 1.1 output: time spent 952 ms Version 1.2 output: time
>>>>spent 29172 ms
>>>>
>>>>Where is the catch?
>>>>
>>>>Regards, Egor Pervuninski egor {dot} pervuninski {at} gmail {dot}
>>>>com
>>>>
>>>>        
>>>>
>>DS> --
>>DS> Davanum Srinivas - http://webservices.apache.org/~dims/
>>DS>
>>
>>Regards,
>>Egor Pervuninski
>>egor {dot} pervuninski {at} gmail {dot} com
>>
>>
>>
>>    
>>
>
>  
>


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