Hi I'm sure it isn't normal, so I'm looking for help. I use TreeCache.put(Fqn fqn, Map data) to replicate about 50 objects. This call takes from 3 to 80 seconds to execute. Cluster (2 nodes :) is build over fast and reliable local network. Execution time analysis show that almost all time is spend in TreeCache.callRemoteMethods(List mbrs, MethodCall method_call, int mode, boolean exclude_self, long timeout) Config at bottom. Any ides? Regards, Seweryn Niemiec -- Szczecin University of Technology Academic Center of Computer Science | <?xml version="1.0" encoding="utf-8"?> | <server> | <classpath archives="jboss-cache.jar, jgroups.jar" codebase="./lib" /> | <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.DummyTransactionManagerLookup</attribute> | <attribute name="NodeLockingScheme">PESSIMISTIC</attribute> | <attribute name="IsolationLevel">REPEATABLE_READ</attribute> | <attribute name="CacheMode">REPL_SYNC</attribute> | <attribute name="UseReplQueue">false</attribute> | <attribute name="ReplQueueInterval">0</attribute> | <attribute name="ReplQueueMaxElements">0</attribute> | <attribute name="ClusterName">GENERATED_BY_JBOSSCACHE_IDE</attribute> | <attribute name="ClusterConfig"> | <config> | <UDP ip_mcast="true" ip_ttl="64" loopback="false" mcast_addr="228.1.2.3" mcast_port="45577" mcast_recv_buf_size="80000" mcast_send_buf_size="150000" | ucast_recv_buf_size="150000" ucast_send_buf_size="80000" bind_addr="10.1.32.1"/> | <PING down_thread="false" num_initial_members="3" timeout="2000" up_thread="false" /> | <MERGE2 max_interval="20000" min_interval="10000" /> | <FD down_thread="true" shun="true" up_thread="true" /> | <FD_SOCK /> | <VERIFY_SUSPECT down_thread="false" timeout="1500" up_thread="false" /> | <pbcast.NAKACK down_thread="false" gc_lag="50" max_xmit_size="8192" retransmit_timeout="600,1200,2400,4800" up_thread="false" /> | <UNICAST down_thread="false" min_threshold="10" timeout="600,1200,2400" window_size="100" /> | <pbcast.STABLE desired_avg_gossip="20000" down_thread="false" up_thread="false" /> | <FRAG down_thread="false" frag_size="8192" up_thread="false" /> | <pbcast.GMS join_retry_timeout="2000" join_timeout="5000" print_local_addr="true" shun="true" /> | <pbcast.STATE_TRANSFER down_thread="true" up_thread="true" /> | </config> | </attribute> | <attribute name="FetchInMemoryState">true</attribute> | <attribute name="InitialStateRetrievalTimeout">5000</attribute> | <attribute name="SyncReplTimeout">120000</attribute> | <attribute name="LockAcquisitionTimeout">15000</attribute> | <attribute name="UseRegionBasedMarshalling">false</attribute> | <attribute name="UseInterceptorMbeans">true</attribute> | </mbean> | </server> | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978350#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...