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		<title>Oracle WebLogic Server -WebLogic Diagnostic Framework &#8211; WLDF</title>
		<link>http://blog.2dev.com/2010/05/oracle-weblogic-server-webwogic-diagnostic-framework/</link>
		<comments>http://blog.2dev.com/2010/05/oracle-weblogic-server-webwogic-diagnostic-framework/#comments</comments>
		<pubDate>Sun, 23 May 2010 03:59:05 +0000</pubDate>
		<dc:creator>Marcos Cubric</dc:creator>
				<category><![CDATA[Appliction Server]]></category>
		<category><![CDATA[Oracle]]></category>
		<category><![CDATA[WebLogic]]></category>
		<category><![CDATA[architecture]]></category>
		<category><![CDATA[Marcos Cubric]]></category>
		<category><![CDATA[Metrics]]></category>
		<category><![CDATA[oracle fusion middleware]]></category>
		<category><![CDATA[Oracle WebLogic Server]]></category>
		<category><![CDATA[performance problems]]></category>
		<category><![CDATA[weblogic]]></category>
		<category><![CDATA[WLDF]]></category>

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		<description><![CDATA[What options do you have when users are complaining about the performance of applications running on WebLogic?

 One very useful option is the capability of generating, gathering, and analyzing diagnostics data about WebLogic servers to find out and fix performance problems.
<p>Post from: <a href="http://blog.2dev.com">2DEV</a><br/><br/><a href="http://blog.2dev.com/2010/05/oracle-weblogic-server-webwogic-diagnostic-framework/">Oracle WebLogic Server -WebLogic Diagnostic Framework &#8211; WLDF</a></p>

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			<content:encoded><![CDATA[<h4>The Scenario</h4>
<p>What options do you have when users are complaining about the performance of applications running on WebLogic?</p>
<p>One very useful option is the capability of generating, gathering, and analyzing diagnostics data about WebLogic servers to find out and fix performance problems.</p>
<h4>The WebLogic Diagnostic Framework &#8211; WLDF</h4>
<p>The WebLogic Diagnostic Framework (WLDF) is a set of components orchestrated together to collect, archive, and access diagnostic information about a WebLogic Server instance and its applications.</p>
<p>Using WLDF services, diagnostic data generated by a running server and the applications deployed within its containers can be:</p>
<ul>
<li>Created</li>
<li>Collected</li>
<li>Analyzed</li>
<li>Archived</li>
<li>Accessed</li>
</ul>
<p>By analyzing this diagnostic data, you can look into the run-time performance of WebLogic servers and its applications, isolate and solve performance problems.</p>
<h4>Architecture</h4>
<p style="text-align: center;"><a href="http://blog.2dev.com/wp-content/uploads/2010/05/weblogic_wldf_architecture.png"><img class="size-full wp-image-201 aligncenter" title="WebLogic WLDF Architecture" src="http://blog.2dev.com/wp-content/uploads/2010/05/weblogic_wldf_architecture.png" alt="weblogic wldf architecture Oracle WebLogic Server  WebLogic Diagnostic Framework   WLDF" width="378" height="259" /></a></p>
<h4>The WLDF Console Extension</h4>
<p><strong> </strong>The WLDF Console Extension provides a set of visual tools you can use to directly manipulate objects to display diagnostic data about WebLogic Server instances.<strong> </strong></p>
<p><strong> </strong><strong> </strong></p>
<h4>WLDF Console Extension Example</h4>
<p><strong> </strong>After starting up WebLogic and still in an idle state:</p>
<p>The number of execute threads remains constant at 3.</p>
<p style="text-align: center;"><a href="http://blog.2dev.com/wp-content/uploads/2010/05/weblogic_wldf_execute_thread_total_count.png"><img class="size-full wp-image-203 aligncenter" title="WebLogic WLDF Execute Thread Total Count" src="http://blog.2dev.com/wp-content/uploads/2010/05/weblogic_wldf_execute_thread_total_count.png" alt="weblogic wldf execute thread total count Oracle WebLogic Server  WebLogic Diagnostic Framework   WLDF" width="542" height="217" /></a></p>
<p>There are zero queued requests.</p>
<p style="text-align: center;"><a href="http://blog.2dev.com/wp-content/uploads/2010/05/weblogic_wldf_queue_length_versus_throughput.png"><img class="size-full wp-image-209 aligncenter" title="WebLogic WLDF Queue Length Versus Throughput" src="http://blog.2dev.com/wp-content/uploads/2010/05/weblogic_wldf_queue_length_versus_throughput.png" alt="weblogic wldf queue length versus throughput Oracle WebLogic Server  WebLogic Diagnostic Framework   WLDF" width="541" height="206" /></a></p>
<p>As the load starts to ramp up, more execute threads are spawned and at some points it time requests have to wait to be executed.</p>
<p style="text-align: center;"><a href="http://blog.2dev.com/wp-content/uploads/2010/05/weblogic_wldf_metrics_chart.png"><img class="size-full wp-image-210 aligncenter" title="WebLogic WLDF Metrics Chart" src="http://blog.2dev.com/wp-content/uploads/2010/05/weblogic_wldf_metrics_chart.png" alt="weblogic wldf metrics chart Oracle WebLogic Server  WebLogic Diagnostic Framework   WLDF" width="465" height="362" /></a></p>
<p style="text-align: center;"><a href="http://blog.2dev.com/wp-content/uploads/2010/05/weblogic_wldf_self-tuning_thread_pool.png"><img class="size-full wp-image-211 aligncenter" title="WebLogic WLDF Self-Tuning Thread Pool" src="http://blog.2dev.com/wp-content/uploads/2010/05/weblogic_wldf_self-tuning_thread_pool.png" alt="weblogic wldf self tuning thread pool Oracle WebLogic Server  WebLogic Diagnostic Framework   WLDF" width="691" height="181" /></a></p>
<h4>Conclusion</h4>
<p>WLDF and the console extension can be extremely helpful while troubleshooting WebLogic server performance problems.</p>
<p>You can learn mote about WLDF by attending the WebLogic Monitoring and Performance Tuning course.</p>
<p>The greatest place to take such training is DesTech in Toronto, Ontario.</p>
<p>Here is a link to the <a href="http://www.destech.com/description.asp?Training=Toronto_ORACLE_Fusion%20Middleware&amp;cid=OWLS10R3MPT" target="_blank">Oracle WebLogic Monitoring and Performance Turning</a> course by Oracle University and delivered by Destech.</p>
<h4>Feedback</h4>
<p>Let us know how you have been using WLDF, what you like about it and what challenges you have faced for utilizing WLDF.</p>
<p>You can send your feedback online at <a href="http://www.2dev.com/">www.2dev.com</a> or by sending us an email at <a href="mailto:feedback@2dev.com">feedback@2dev.com</a>.</p>
<h4>Download</h4>
<p><a title="Oracle WebLogic Diagnostic Framework - WLDF" href="http://www.2dev.com/docs/Oracle_WebLogic_Monitoring_WLDF.pdf" target="_blank">Oracle_WebLogic_Monitoring_WLDF.pdf</a></p>
<p>Post from: <a href="http://blog.2dev.com">2DEV</a><br/><br/><a href="http://blog.2dev.com/2010/05/oracle-weblogic-server-webwogic-diagnostic-framework/">Oracle WebLogic Server -WebLogic Diagnostic Framework &#8211; WLDF</a></p>
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