Permeance Technologies

Liferay provides a class-loader-proxy (CLP) for their Transaction Manager. 1. Add the following to your spring context.xml:  <context:component-scan base-package="foo.bar" /> <bean id="txManager" class="com.liferay.util.spring.transaction.TransactionManagerClp"> </bean> <tx:annotation-driven transaction-manager="txManager"...
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I'm currently helping a client to ensure their Liferay Portal meets the performance targets set by the business. Since many of the portlets are custom-developed, we need to identify which portlets are causing high latencies under load. Set the following logger in your Log4j configuration, in our case, tomcat/lib/META-INF/portal-log4j-ext.xml :     <category...
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Running the unit tests for Liferay Portal with MacOS X is straight-forward once you know how. Set up the environment Install Ant 1.7+ Install MySQL 5.0+ Install Java 6.0+ Set environment variables: export JAVA_OPTS="-Xmx512m -XX:MaxPermSize=256m" export COMPUTERNAME=$HOSTNAME  Create the directory structure The following commands: ...
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The following BeanShell script can be used to bulk delete all non-admin users in a Liferay instance, including their groups, subscriptions, announcements, assets, blogs, etc. : import com.liferay.portal.util.PortalUtil; import com.liferay.portal.service.UserLocalServiceUtil; import java.util.concurrent.*; pool = Executors.newFixedThreadPool(20); for (user :...
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The JTop plugin for jconsole provides information on the most resource-intensive Java threads. Rejeev Divakaran has extended JTop to include CPU per interval instead of just the cumulative CPU. This makes JTop more useful for diagnosing transient spikes in CPU usage.
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