I have a problem when using Cocoon to aggregate large amounts of content
that is to be serialised as PDF.
I have a set of pipelines that build a XML document that contains a set of
xincludes which is then transformed using the xinclude transformer before
conversion into XSL-FO and final serialisation to PDF. Using all the
standard transformers - nothing extra, XML, XSLT, Xinclude but no XSP and
the like.
If I run this using Tomcat it works for small document sets (29) amounting
to 218KB of XML and 43KB of PDF.
If I run this using Tomcat for a large document set (1044) amounting to
3.5MB of XML and 2.7MB of PDF then I get OutOfMemoryError messages in the
logs (cocoon and tomcat) - see below.
If I install a full version of Jetty I get outOfMemory errors too.
However, if I run the same app within the version of Jetty that comes with
Cocoon there is no problem!!!!
*** Can anyone explain why the Jetty that comes with cocoon works while
Tomcat does not??? ****
I have include system config's and log extracts from both cocoon and tomcat
at the end of this e-mail.
I have tried all the various tricks with changing memory settings for JVM
like:
CATALINA_OPTS=" -Xms128m -Xmx128m "
But with no success. No out of memory errors, it just never finished after
20 minutes waiting!
I have also ensured that I use the FOP tuning tips to ensure best recycling
of memory.
Server Configuration
--------------------
OS: Red Hat Linux - Advanced Server version 2.1
HTTP Server: Apache httpd-2.0.48
VM: Java 1.4.2_02-b03
AppServer: Tomcat 4.1.30
App: Cocoon 2.1.2
cocoon/WEB-INF/logs/core.log
----------------------------
WARN (2004-06-01) 10:49.01:190 [core.manager]
(/cocoon/RIU/Aggregate/Content/Documents/World/Former_Soviet_Union/Russia/Ru
ssia.pdf) TP-Processor7/ExcaliburComponentManager: Attempted to release a
org.apache.cocoon.components.treeprocessor.sitemap.ComponentsSelector but
its handler could not be located.
ERROR (2004-06-01) 10:50.44:818 [core.store.janitor] (Unknown-URI)
Unknown-thread/StoreJanitorImpl: OutOfMemoryError in freeMemory()
ERROR (2004-06-01) 10:51.07:636 [core.store.janitor] (Unknown-URI)
Unknown-thread/StoreJanitorImpl: OutOfMemoryError in freeMemory()
WARN (2004-06-01) 10:51.16:127 [core.manager]
(/cocoon/RIU/Aggregate/Content/Documents/World/Former_Soviet_Union/Russia/Ru
ssia.pdf) TP-Processor7/ExcaliburComponentManager: Attempted to release a
org.apache.cocoon.components.treeprocessor.sitemap.ComponentsSelector but
its handler could not be located.
ERROR (2004-06-01) 10:52.34:308 [core.store.janitor] (Unknown-URI)
Unknown-thread/StoreJanitorImpl: OutOfMemoryError in freeMemory()
cocoon/WEB-INF/logs/error.log
-----------------------------
ERROR (2004-06-01) 10:50.44:819 [core.store.janitor] (Unknown-URI)
Unknown-thread/StoreJanitorImpl: OutOfMemoryError in freeMemory()
ERROR (2004-06-01) 10:51.09:073 [core.store.janitor] (Unknown-URI)
Unknown-thread/StoreJanitorImpl: OutOfMemoryError in freeMemory()
ERROR (2004-06-01) 10:52.34:309 [core.store.janitor] (Unknown-URI)
Unknown-thread/StoreJanitorImpl: OutOfMemoryError in freeMemory()
Tomcat/logs/localhost_log.2004-06-01.txt
----------------------------------------
2004-06-01 10:51:15 StandardWrapperValve[Cocoon]: Servlet.service() for
servlet Cocoon threw exception
javax.servlet.ServletException: Servlet execution threw an exception
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:269)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:256)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:191)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:171)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163
)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:199)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne
ction(Http11Protocol.java:700)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:584)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:683)
at java.lang.Thread.run(Thread.java:534)
----- Root Cause -----
java.lang.OutOfMemoryError
2004-06-01 10:52:37 StandardWrapperValve[Cocoon]: Servlet.service() for
servlet Cocoon threw exception
javax.servlet.ServletException: Servlet execution threw an exception
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:269)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:256)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:191)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:171)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163
)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:199)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne
ction(Http11Protocol.java:700)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:584)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:683)
at java.lang.Thread.run(Thread.java:534)
----- Root Cause -----
java.lang.OutOfMemoryError
Regards
Philip A. R. Fennell
Web Developer
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