Hi Kohsuke,
I tried the switching to using a single jaxb context and reusing Unmrshaller
and upgraded to jwdsp 1.5. But from what I see the InterLeaveExp objects do
not show up in heap dump only when I do not call setValidating(true) .
Also the marshalling time taken is very inconsistent when unmarshalling The
time range in the test we have seen to unmarshall iis between 2ms to 60
seconds. Does every call to setValidating() have any performance penalty.
This is the change I made
private static JAXBContext jc = JAXBContext
.newInstance(PKG,MyClass.getClass().getClassLoader());
private Unmarshaller unmarshaller = jc.createUnmarshaller();
public Object unmarshall(String xml,boolean validate)
{
unmarshaller.setValidating(validate);
return unmarshaller.unmarshal(new StreamSource(new StringReader(xml)));
}
Also how does the JAXB choose its XML parser we are using xercesImpl.jar
1.4.4 verison. Could that impact the performance.
I really your appreciate help and recommendation. Our transaction volumes
are increasing I would appreciate any recommendation to improve the
performance
Regards,
kesavan
>From: Kohsuke Kawaguchi <Kohsuke.Kawaguchi_at_Sun.COM>
>Reply-To: users_at_jaxb.dev.java.net
>To: users_at_jaxb.dev.java.net
>Subject: Re: InterleaveExp object growth
>Date: Fri, 18 Feb 2005 09:42:03 -0800
>
>Kesavan T.S wrote:
>>Hi Kohsuke,
>>Thanks for the info we are going to try using single context . We have
>>about 10 message driven applications running within Websphere app server
>>and each will have 15 concurrent threads running. Since all these run
>>within the same JVM the websphere class loader loads these classes from
>>each of the application install directory. So there would be separate
>>instance of each object in these 10 application loaded by the class
>>loader.
>
>I see. Well, 15x10 -> 10 would be still a drastic reduction.
>
>
>
>--
>Kohsuke Kawaguchi
>Sun Microsystems kohsuke.kawaguchi_at_sun.com
>
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