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JBoss Tomcat high number of threads and slower application response
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reply from <a href="http://community.jboss.org/people/rohit.macherla">Rohit Macherla</a> in <i>Performance Tuning</i> - <a href="http://community.jboss.org/message/536267#536267">View the full discussion</a>
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<div class="jive-rendered-content"><p>I was analysing the thread dump and found this :</p><p>Most of the threads that are BLOCKED are hung from stacktrace originating from :</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">.
.
javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:211)
javax.xml.bind.ContextFinder.find(ContextFinder.java:372)
javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:574)
org.jboss.ws.core.jaxws.CustomizableJAXBContextFactory.createContext(CustomizableJAXBContextFactory.java:92)
.
.
</code></pre><p><br/>These threads are either executing the actual web-service method or are trying to perform a getPort() operation.</p><p>My Java code for invoking the webservice is of the type :</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java"><font color="navy"><b>public</b></font> SomeResponse invoke(Payload payload)
<font color="navy">{</font>
  SOcreation.ServiceManagementAPIService SO_service = <font color="navy"><b>new</b></font> SOcreation.ServiceManagementAPIService();
  SOcreation.ServiceManagementAPI SO_port = SO_service.getServiceManagementAPIPort();
  SO_port.callWebService(payload); <font color="darkgreen">//Sample</font>
<font color="navy">}</font>
</code></pre><p>Is this a good practice ? Or should the service and port objects be created as Class-level (making them global and/or static too) ?</p><p>Is there any way to escape the getPort() thing ? Why does the WSDL be read out each and every time the WebService is called ? Doesn't JBoss cache it ? In the "debug" log mode, I find that the entire WSDL is printed out (i.e., read from the file) and then parsed (XML parsing is costly).</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>(The synchornized Map method which I was discussing also arises out of the creation of JAXB context)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Any answers ?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Cheers</p><p>Rohit M</p></div>
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<p style="margin: 0;">Reply to this message by <a href="http://community.jboss.org/message/536267#536267">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in Performance Tuning at <a href="http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2078">Community</a></p>
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