Hi everyone, Could you tell me if it's normal or if it's a bug; in fact i'm not sure. I'm using jbosscache in local mode but attributes "timeToLiveSeconds" and "maxNodes" in default-local.xml are not taken into account. It's default.xml which is use.
Here are my configurations files :
xwiki.properties :
[...]
cache.cacheHint=jbosscache
cache.localCacheHint=jbosscache/local
[...]
default-local.xml :
<?xml version="1.0" encoding="UTF-8"?>
<server>
<mbean code="org.jboss.cache.jmx.CacheJmxWrapper"
name="jboss.cache:service=Cache">
<!-- Specific eviction policy configurations. This is LRU -->
<attribute name="EvictionPolicyConfig">
<config>
<attribute name="wakeUpIntervalSeconds">5</attribute>
<attribute
name="policyClass">org.jboss.cache.eviction.LRUPolicy</attribute>
<!-- Cache wide default -->
<region name="/xwiki">
<!-- NOT TAKEN INTO ACCOUNT, BUG ? -->
<attribute name="maxNodes">5002</attribute>
<attribute name="timeToLiveSeconds">21602</attribute>
</region>
</config>
</attribute>
</mbean>
</server>
default.xml :
<?xml version="1.0" encoding="UTF-8"?>
<server>
<!--
==================================================================== -->
<!-- Defines JBoss Cache configuration
-->
<!--
==================================================================== -->
<!-- Note the value of the 'code' attribute has changed since JBC 1.x
-->
<mbean code="org.jboss.cache.jmx.CacheJmxWrapper"
name="jboss.cache:service=Cache">
<!-- Specific eviction policy configurations. This is LRU -->
<attribute name="EvictionPolicyConfig">
<config>
<attribute name="wakeUpIntervalSeconds">5</attribute>
<attribute
name="policyClass">org.jboss.cache.eviction.LRUPolicy</attribute>
<!-- Cache wide default -->
<region name="/xwiki">
<attribute name="maxNodes">5001</attribute>
<attribute name="timeToLiveSeconds">21601</attribute>
</region>
</config>
</attribute>
</mbean>
</server>
In fact, the 'maxNodes' and 'timeToLiveSeconds' which are used are 5001 and
21601.
Is it normal ?
I would like adding that I'm trying to optimise my cache configuration
because we have error "java.lang.OutOfMemoryError: Java heap space" one or
twice a week and we are suspecting a cache problem.
( Tomcat parameters used are : -Xms1024m -Xmx1048m -XX:MaxPermSize=128m
[...] )
We have many errors look like arround the OutofMemory :
08:47:45,880
[http://wiki-soa.airfrance.fr/xwiki/bin/view/XWiki/MyTestClass] ERROR
aseEvictionAlgorithm Eviction
of /xwiki/wikidict:BlogToolbar.WebPreferences failed
java.lang.NullPointerException
at org.apache.log4j.Category.log(Category.java:849)
at org.apache.commons.logging.impl.Log4JLogger.trace
(Log4JLogger.java:152)
at
org.jboss.cache.factories.ComponentRegistry.invocationsAllowed
(ComponentRegistry.java:816)
at
org.jboss.cache.invocation.CacheInvocationDelegate.cacheStatusCheck
(CacheInvocationDelegate.java:582)
at org.jboss.cache.invocation.CacheInvocationDelegate.evict
(CacheInvocationDelegate.java:355)
at org.jboss.cache.eviction.BaseEvictionPolicy.evict
(BaseEvictionPolicy.java:27)
at org.jboss.cache.eviction.BaseEvictionAlgorithm.evictCacheNode
(BaseEvictionAlgorithm.java:231)
at org.jboss.cache.eviction.LRUAlgorithm.evict
(LRUAlgorithm.java:92)
at org.jboss.cache.eviction.LRUAlgorithm.prune
(LRUAlgorithm.java:172)
at org.jboss.cache.eviction.BaseEvictionAlgorithm.process
(BaseEvictionAlgorithm.java:116)
at org.jboss.cache.eviction.EvictionTimerTask.handleRegion
(EvictionTimerTask.java:133)
at org.jboss.cache.eviction.EvictionTimerTask.processRegions
(EvictionTimerTask.java:118)
at org.jboss.cache.eviction.EvictionTimerTask.access$000
(EvictionTimerTask.java:28)
at org.jboss.cache.eviction.EvictionTimerTask$1.run
(EvictionTimerTask.java:106)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)
But in fact I don't know if this error is a cause or a consequence of this
OutOfMemoryError.
Thanks,
Julien
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