Hi,
I'm doing some benchmarks on geoserver and i've encountered serious memory
issues.
I am requesting lots of WFS request (GetFeature with bbox or filters) on two
instances of geoserver 2.1.0.
After about one hour, the performance collapses and the GC logs show memory
problems. On each geoserver, the allocated memory regularly increase until its
maximum (2 Go) after which the GC takes 80% of the cpu time.
I suspect a memory leak but I haven't found anything related in the 2.1.0
version.
Jmap confirms this because after the bench, there is still 180 Mo of
org.eclipse.xsd.XSDElementDeclaration objects, 160 Mo of
org.eclipse.xsd.XSDTypeDefinition objects, 110 Mo of
org.appache.xerces.dom.AttrNSImpl objects, 90 Mo of
org.appache.xerces.dom.TextImpl, and lots of others org.eclipse.xsd,
org.eclipse.emf and org.appache.xerces objects.
I don't know if there is a link but I have found in the tomcat logs lots of
this message:
"GRAVE: The web application [/geoserver] created a ThreadLocal with key of type
[null] (value [null]) and a value of type
[org.geotools.data.postgis.WKBAttributeIO] (value
[org.geotools.data.postgis.WKBAttributeIO@676f0256]) but failed to remove it
when the web application was stopped. This is very likely to create a memory
leak."
And also lots of :
java.util.ConcurrentModificationException
at
org.eclipse.emf.common.util.BasicEList$EIterator.checkModCount(BasicEList.java:1327)
at
org.eclipse.emf.common.util.BasicEList$EIterator.next(BasicEList.java:1275)
at
org.eclipse.xsd.impl.XSDSchemaImpl.changeReference(XSDSchemaImpl.java:2432)
at
org.eclipse.xsd.impl.XSDConcreteComponentImpl.eNotify(XSDConcreteComponentImpl.java:1221)
(...)
I would appreciate some help,
Axel Bonnet
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