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Hi @all
I got a question for all of you.
I wrote a Portal (ZK CE 5.0.7) which has the ability to start varios Applications. Each application is a JAR file which contains varios ZUL files, java, img etc.
The main Window of each Application is created over
Codesnippet
InputStream zulInput = this.getClass().getResourceAsStream(cUrl) ; if(zulInput == null) { Messagebox.show("The program "+cName+" is not available!"); return; } Reader zulReader = new InputStreamReader(zulInput) ; oApp = (AppWindow) Executions.createComponentsDirectly(zulReader,"zul", _oMainLayout.getoInnerCenterDiv(), paramMap); zulReader.close(); zulInput.close();
each ZUL used after the main window contains the include TAGs for "internal" use inside of each Application.
for example, like that:
<window xmlns:w="http://www.zkoss.org/2005/zk/client" id="winMainWindow" mode="overlapped" sizable="true" width="100%" height="100%" layout="${arg.layout}" taskbar="${arg.taskbar}" user="${arg.user}" superParent="${self}" desktop="${arg.portalDesktop}" closable="true" maximizable="false" minimizable="false" use="com.example.MainWindow"> <include mode="instant" id="includeCalendar" width="100%" height="100%" src="~./calendar/PanelCalendar.zul" superParent="${winMainWindow}" layout="${arg.layout}" taskbar="${arg.taskbar}"/> </window>
Here comes my observation:
I noticed that on my server
Linux version 2.6.18-194.el5 ([email protected]) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Tue Mar 16 21:52:39 EDT 2010
and my Tomcat
apache-tomcat-6.0.29
When I run
ls -la /proc/4143/fd|grep -E '[0-9]\.' |awk '{print $11}' |sort -n|nl
which gives me all of the filedescriptors used by my process 4143
I noticed that I get a lot more Filedescriptors that I have connections to my server, which are btw around 200 tops but at
the time I executed this comment I had only 60.
Snippet
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/MainApplication.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/timelinez.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/timeplotz.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/transport.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/transportPLM.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/transportPT.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/transportSM.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/woden-api-1.0M8.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/woden-impl-dom-1.0M8.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/wsdl4j-1.6.2.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/wstx-asl-3.2.4.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/XmlSchema-1.4.3.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/xom-1.1d2.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/xstream-1.3.1.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zcommon.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zcommons-el.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zhtml.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zk.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zkplus.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zul.jar
/opt/apache-tomcat-6.0.29/webapps/Portal/WEB-INF/lib/zweb.jar
Finally here comes the question. does an include in a ZUL
consume a Filedescriptor for each include / ZUL ???
Why is that and how can I prevent that ?
any comments are welcome !
Thanks in advance !
Patrick
anybody ???
Seems like Includes in zul opens FileDescriptor for each one !
some help, please !
Asked: 2012-09-21 15:41:58 +0800
Seen: 128 times
Last updated: Oct 28 '13