Clarification of memory usage?

[ruchiragayan]

Hi all,

I am working on a project which we use Infinispan as caching framework. I want to closely look what object takes more memory. So I used JProfiler to monitor the memory usage. After deploying the my .ear on JBoss I am confused with the result. At a selected time 2.01 GB memory occupied by all objects.

My curiosity was, more than 80,000,000 instance of java.util.concurrent.ConcurrentLinkedQueue$Itr there and they took almost 1.3GB. I haven't use java.util.concurrent.ConcurrentLinkedQueue$Itr in my Implementation. I checked this time ti time situation is almost same all the time. Majority of memory utilization for java.util.concurrent.ConcurrentLinkedQueue$Itr.

I am hoping some explanation here, how and why this happened?

[wdfink]

how do you use the cache? Is it possible to show more details of configuration and use.

also what you add to this cache and when you see that Objects?

[ruchiragayan]

Just after deploy my .ear in JBoss java.util.concurrent.ConcurrentLinkedQueue$Itr ara visible.

Any selected time after the deployment java.util.concurrent.ConcurrentLinkedQueue$Itr are there in memory.

In the deployment time I loaded some data to Infinispan cache (like customers).

My configuration as follows

	<global>
	<transport transportClass="org.infinispan.remoting.transport.jgroups.JGroupsTransport">
	<properties>
	<property name="configurationFile" value="jgroups-tcp-custom.xml"/>
	</properties>
	</transport>
	<globalJmxStatistics enabled="false" allowDuplicateDomains="true">
	</globalJmxStatistics>
	</global>

	<default>
	<eviction strategy="NONE"/>
	<transaction
	transactionMode="NON_TRANSACTIONAL"
	lockingMode="OPTIMISTIC"
	transactionManagerLookupClass="org.infinispan.transaction.lookup.GenericTransactionManagerLookup"
	syncRollbackPhase="false"
	syncCommitPhase="false"
	useEagerLocking="false"/>
	<clustering mode="local">
	<async/>
	</clustering>
	<indexing enabled="false" indexLocalOnly="true">
	<properties>
	<property name="hibernate.search.default.directory_provider" value="ram"/>
	<property name="hibernate.search.lucene_version" value="LUCENE_CURRENT"/>
	<property name="hibernate.search.default.exclusive_index_use" value="false"/>
	</properties>
	</indexing>
	</default>

	<namedCache name="customer">
	<eviction strategy="LIRS" maxEntries="2000"/>
	<expiration maxIdle="3600000"/>
	<!--60 minutes max idle -->
	<indexing enabled="true"/>
	</namedCache>