10:40 a.m.
Hi,
I am setting up a prototype to evaluate our re-engineering project.
I need a cache system to hold the transaction data and I've choose JBoss Cache after
browsing the website. So I am new to JBoss Cache and I meet a problem in setting up using
the FileCacheLoader.
My intension is to first setup a simple Cache with file persist for fail over recovery.
Everything seems working fine untill I set up a FileCacheLoder.
The problem is it becomes SO SLOW for putting entries after set up the FileCacheLoader. I
have a testing program that simply write and read
some objects to the same cache node in a loop. Before I set up the FileCacheLoader, it
take only about 1-2ms to read/write an object.
But after using the FileCacheLoader, it takes 100ms to write an entry in the beginning
and the time keeps growing and finally reach about 1000ms per write. I know there must be
some performance degrade after using cacheLoader but this kind of degrade seems not right
. Can somebody take a look at my configuration file as following, Thanks a lot !
Besides, will a JDBCCacheLoader provide better performance ? It will be greatly
appreciated if somebody can provide samples for that .
=========== jbosscache-config.xml ==========
|
| <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.DummyTransactionManagerLookup</attribute>
|
| <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
|
| <attribute name="CacheMode">LOCAL</attribute>
|
| <attribute name="ClusterName">TreeCache-Cluster</attribute>
|
| <attribute name="ClusterConfig">
| <config>
| <!-- UDP: if you have a multihomed machine,
| set the bind_addr attribute to the appropriate NIC IP address
| -->
| <!-- UDP: On Windows machines, because of the media sense feature
| being broken with multicast (even after disabling media sense)
| set the loopback attribute to true
| -->
| <UDP mcast_addr="228.1.2.3" mcast_port="45566"
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 shun="true" up_thread="true"
down_thread="true" />
| <VERIFY_SUSPECT timeout="1500" up_thread="false"
down_thread="false" />
| <pbcast.NAKACK gc_lag="50" max_xmit_size="8192"
retransmit_timeout="600,1200,2400,4800" up_thread="false"
| down_thread="false" />
| <UNICAST timeout="600,1200,2400" window_size="100"
min_threshold="10" down_thread="false" />
| <pbcast.STABLE desired_avg_gossip="20000" up_thread="false"
down_thread="false" />
| <FRAG frag_size="8192" down_thread="false"
up_thread="false" />
| <pbcast.GMS join_timeout="5000" join_retry_timeout="2000"
shun="true" print_local_addr="true" />
| <pbcast.STATE_TRANSFER up_thread="false" down_thread="false"
/>
| </config>
| </attribute>
|
| <attribute name="SyncReplTimeout">10000</attribute>
|
| <attribute name="LockAcquisitionTimeout">15000</attribute>
|
| <attribute name="EvictionPolicyClass"></attribute>
|
| <attribute name="CacheLoaderConfiguration">
| <config>
| <passivation>false</passivation>
| <preload>/test</preload>
| <shared>false</shared>
|
| <cacheloader>
| <class>org.jboss.cache.loader.FileCacheLoader</class>
| <properties>
| location=/tmp/filetore
| </properties>
| <async>true</async>
|
| <fetchPersistentState>true</fetchPersistentState>
| <ignoreModifications>false</ignoreModifications>
| <purgeOnStartup>false</purgeOnStartup>
| </cacheloader>
|
| </config>
| </attribute>
|
| </mbean>
| </server>
===== Testing Program =====
|
| TreeCache cache = new TreeCache();
| PropertyConfigurator pc = new PropertyConfigurator();
| pc.configure(cache, "jbosscache-config.xml");
|
| cache.createService();
| cache.startService();
|
| cache.put("/test", key, obj );
|
| ....
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