Hi everyone!
We are running a Tapestry application on an Jetty7 hightide deployment
server.
The server has 2gig ram and jetty is configured the following way:
JAVA_OPTIONS="-Xmx1024m -XX:MaxPermSize=256m -Djava.awt.headless=true"
(On the server is only running jetty, mysql and postfix nothing else.)
After a day of running the web application REALLY slows down and when
reviewing logfiles I stumbled over:
[ERROR] TapestryModule.RequestExceptionHandler Processing of request failed
with uncaught exception: GC overhead limit exceeded
java.lang.OutOfMemoryError: GC overhead limit exceeded
at
org.hibernate.event.def.AbstractFlushingEventListener.cascadeOnFlush(AbstractFlushingEventListener.java:154)
at
org.hibernate.event.def.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlushingEventListener.java:145)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:88)
at
org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:58)
at
org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:996)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1141)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
at
de.dkfz.signaling.GenomeRNAi.dao.ReagentDAOImpl.getReagent(ReagentDAOImpl.java:45)
at $ReagentDAO_13190064f02.getReagent($ReagentDAO_13190064f02.java)
at $ReagentDAO_13190064e59.getReagent($ReagentDAO_13190064e59.java)
at
de.dkfz.signaling.GenomeRNAi.components.NewPhenotypes.getReagentIDFound(NewPhenotypes.java:447)
at
$PropertyConduit_13190064e74.get($PropertyConduit_13190064e74.java)
at
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:58)
at
org.apache.tapestry5.internal.structure.InternalComponentResourcesImpl$1.read(InternalComponentResourcesImpl.java:510)
at
org.apache.tapestry5.internal.structure.InternalComponentResourcesImpl$1.read(InternalComponentResourcesImpl.java:496)
at
org.apache.tapestry5.corelib.components.If._$read_parameter_test(If.java)
at org.apache.tapestry5.corelib.components.If.test(If.java:45)
at
org.apache.tapestry5.corelib.base.AbstractConditional.beginRender(AbstractConditional.java:59)
at
org.apache.tapestry5.corelib.base.AbstractConditional.beginRender(AbstractConditional.java)
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$BeginRenderPhase.invokeComponent(ComponentPageElementImpl.java:206)
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AbstractPhase.run(ComponentPageElementImpl.java:164)
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.invoke(ComponentPageElementImpl.java:933)
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.access$400(ComponentPageElementImpl.java:49)
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AbstractPhase.callback(ComponentPageElementImpl.java:159)
at
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$BeginRenderPhase.render(ComponentPageElementImpl.java:211)
at
org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:74)
at
org.apache.tapestry5.internal.services.PageRenderQueueImpl.render(PageRenderQueueImpl.java:121)
at
$PageRenderQueue_13190064e47.render($PageRenderQueue_13190064e47.java)
at
$PageRenderQueue_13190064e3d.render($PageRenderQueue_13190064e3d.java)
at
org.apache.tapestry5.internal.services.MarkupRendererTerminator.renderMarkup(MarkupRendererTerminator.java:37)
at
org.apache.tapestry5.services.TapestryModule$27.renderMarkup(TapestryModule.java:1748)
at
$MarkupRenderer_13190064e49.renderMarkup($MarkupRenderer_13190064e49.java)
When searching for this error message I hear that the garbage collector is
too often active so that the main program slows down.
Is there anything to do about this, a way to analyse the parts of the
program which are too GC intensive?
Or are there ways to improve this situation?
Somebody has experiences with that?
Thanks in advance
Oliver
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