[jboss-user] [JBossCache] - Re: Weird TreeCache.printDetails()

[ottuzzi]

Hi Genman,all,

thank you for your reply.
I'm a little bit surprised by your response because I do not use any cacheLoader... here is my configuration:
<?xml version="1.0" encoding="UTF-8"?>
  | <server>
  | 
  |     <classpath codebase="./lib" archives="jboss-cache.jar, jgroups.jar"/>
  | 
  |     <mbean code="org.jboss.cache.TreeCache"
  |         name="jboss.cache:service=TreeCache">
  | 
  |         <depends>jboss:service=Naming</depends>
  |         <depends>jboss:service=TransactionManager</depends>
  | 
  |         <attribute name="TransactionManagerLookupClass">org.jboss.cache.GenericTransactionManagerLookup</attribute>
  | 
  |         <attribute name="NodeLockingScheme">PESSIMISTIC</attribute>
  |         <attribute name="IsolationLevel">READ_COMMITTED</attribute>
  |         <attribute name="CacheMode">REPL_ASYNC</attribute>
  | 
  |         <attribute name="UseReplQueue">false</attribute>
  |         <attribute name="ReplQueueInterval">1000</attribute>
  |         <attribute name="ReplQueueMaxElements">5</attribute>
  | 
  |         <attribute name="ClusterName">TreeCache-RA-Cluster</attribute>
  |         <attribute name="ClusterConfig">
  |             <config>
  |                 <UDP mcast_addr="228.1.2.3" mcast_port="48866"
  |                     ip_ttl="64" ip_mcast="true"
  |                     mcast_send_buf_size="150000" mcast_recv_buf_size="80000"
  |                     ucast_send_buf_size="150000" ucast_recv_buf_size="80000"
  |                     loopback="false"/>
  |                 <PING timeout="2000" num_initial_members="3"
  |                     up_thread="false" down_thread="false"/>
  |                 <MERGE2 min_interval="10000" max_interval="20000"/>
  |                 <FD_SOCK/>
  |                 <VERIFY_SUSPECT timeout="1500"
  |                                 up_thread="false" down_thread="false"/>
  |                 <pbcast.NAKACK gc_lag="50" retransmit_timeout="600,1200,2400,4800"
  |                                 max_xmit_size="8192" up_thread="false" down_thread="false"/>
  |                 <UNICAST timeout="600,1200,2400" down_thread="false"/>
  |                 <pbcast.STABLE desired_avg_gossip="20000"
  |                                 up_thread="false" down_thread="false"/>
  |                 <pbcast.GMS join_timeout="5000" join_retry_timeout="2000"
  |                             shun="true" print_local_addr="true"/>
  |                 <FC max_credits="2000000" down_thread="false" up_thread="false"
  |                     min_threshold="0.20"/>
  |                 <FRAG frag_size="8192" down_thread="false" up_thread="true"/>
  |                 <pbcast.STATE_TRANSFER up_thread="true" down_thread="true"/>
  |             </config>
  |         </attribute>
  | 
  |         <attribute name="FetchInMemoryState">true</attribute>
  | 
  |         <attribute name="InitialStateRetrievalTimeout">20000</attribute>
  | 
  |         <attribute name="SyncReplTimeout">20000</attribute>
  | 
  |         <attribute name="LockAcquisitionTimeout">15000</attribute>
  | 
  |         <attribute name="EvictionPolicyClass">org.jboss.cache.eviction.LRUPolicy</attribute>
  |         
  |         <attribute name="EvictionPolicyConfig">
  |             <config>
  |                 <attribute name="wakeUpIntervalSeconds">30</attribute><!-- 30 SECONDS -->
  |                 <!-- Cache wide default -->
  |                 <region name="/_default_">
  |                     <attribute name="maxNodes">10000</attribute>
  |                     <attribute name="timeToLiveSeconds">1800</attribute><!-- 30 MINUTES -->
  |                     <attribute name="maxAgeSeconds">1800</attribute><!-- 30 MINUTES -->
  |                 </region>
  |                 <region name="/USER/">
  |                     <attribute name="maxNodes">1000</attribute>
  |                     <attribute name="timeToLiveSeconds">900</attribute><!-- 15 MINUTES -->
  |                     <attribute name="maxAgeSeconds">900</attribute><!-- 15 MINUTES -->
  |                 </region>
  |             </config>
  |         </attribute>
  | 
  |         <attribute name="UseRegionBasedMarshalling">true</attribute>
  | 
  |     </mbean>
  | 
  | </server>
  | 

What you say can explain some behaviour I observed but it open many more questions:
1) is it a default that I can disable?
2) where is it saving cached objects on disk?

Many thanks for your patience... I really love to understand how things works.

Bye
Piero

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