 | Mailing List | | Home | | Forum Home | | JBoss - Java Application Server | | Tomcat - JSP/Servlet container | | Struts - A MVC web framework | | iText - An open source PDF Java Library | | JDOM - JDOM XML Parser | | J2EE - A mailing list for Java(tm) 2 Platform, Enterprise Edition | | JSP - A mailing list about Java Server Pages specification and reference | | J2EE Pattern - An interest list for Sun Java Center J2EE Pattern Catalog | | Servlet - A mailing list for discussion about Sun Microsystem's Java Servlet API Technology | |
Struts & Hibernate
|
|
|
| | | - Potential Deadlock - 1.4.1.SP3 and BoundedLinkedQueu | - Potential Deadlock - 1.4.1.SP3 and BoundedLinkedQueu 2007-07-17 - By mraccola
Back
I am experiencing what appears to be a deadlock situation in JBoss Cache 1.4.1
.SP3. After some period of time with the app up and running in JBoss AS 4.0.5 I
am seeing one thread holding a couple of monitor locks in BoundedLinkedQueue
and a multitude of threads waiting on the lock. The application grinds to a
halt with users experiencing hanging HTTP responses.
In the latest scenario I have 28 HTTP threads,
26 are blocked (see Stack #1).
1 thread holds 2 locks (see Stack #2).
1 thread is still free (see Stack #3).
A Google search indicates that BoundedLinkedQueue has had issues with race
conditions in the past, http://altair.cs.oswego.edu/pipermail/concurrency
-interest/2004-September/001037.html, although the scenario seems slightly
different.
Stack #1
"http-0 (See http://ttp-0.ora-code.com).0.0.0-8080-12" daemon prio=1 tid=0x08c5bd58 nid=0x26e0 waiting for
monitor entry [0x97cfc000..0x97cff030]
| at EDU.oswego.cs.dl.util.concurrent.BoundedLinkedQueue.put(Unknown Source)
| - waiting to lock <0xb4291690> (a java.lang.Object  )
| at org.jboss.cache.eviction.Region.putNodeEvent(Region.java:141)
| at org.jboss.cache.interceptors.EvictionInterceptor
.doEventUpdatesOnRegionManager(EvictionInterceptor.java:149)
| at org.jboss.cache.interceptors.EvictionInterceptor.updateNode
(EvictionInterceptor.java:122)
| at org.jboss.cache.interceptors.EvictionInterceptor.invoke
(EvictionInterceptor.java:97)
| at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
| at org.jboss.cache.interceptors.OptimisticCreateIfNotExistsInterceptor
.invoke(OptimisticCreateIfNotExistsInterceptor.java:69)
| at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
| at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.invoke
(OptimisticValidatorInterceptor.java:87)
| at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
| at org.jboss.cache.interceptors.OptimisticLockingInterceptor.invoke
(OptimisticLockingInterceptor.java:126)
| at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
| at org.jboss.cache.interceptors.TxInterceptor.handleNonTxMethod
(TxInterceptor.java:365)
| at org.jboss.cache.interceptors.TxInterceptor.invoke(TxInterceptor.java
:160)
| at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
| at org.jboss.cache.interceptors.CacheMgmtInterceptor.invoke
(CacheMgmtInterceptor.java:138)
| at org.jboss.cache.TreeCache.invokeMethod(TreeCache.java:5863)
| at org.jboss.cache.TreeCache.get(TreeCache.java:3627)
| at org.jboss.cache.TreeCache.get(TreeCache.java:3608)
|
Stack #2
"http-0 (See http://ttp-0.ora-code.com).0.0.0-8080-11" daemon prio=1 tid=0x087dab18 nid=0x2691 in Object.wait()
[0x976f0000..0x976f3030]
| at java.lang.Object (Native Method)
| at java.lang.Object (Object.java:474)
| at EDU.oswego.cs.dl.util.concurrent.BoundedLinkedQueue.put(Unknown Source)
| - locked <0xb42914e8> (a EDU.oswego.cs.dl.util.concurrent
.BoundedLinkedQueue)
| - locked <0xb4291690> (a java.lang.Object )
| at org.jboss.cache.eviction.Region.putNodeEvent(Region.java:141)
| at org.jboss.cache.interceptors.EvictionInterceptor
.doEventUpdatesOnRegionManager(EvictionInterceptor.java:149)
| at org.jboss.cache.interceptors.EvictionInterceptor.updateNode
(EvictionInterceptor.java:122)
| at org.jboss.cache.interceptors.EvictionInterceptor.invoke
(EvictionInterceptor.java:97)
| at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
| at org.jboss.cache.interceptors.OptimisticCreateIfNotExistsInterceptor
.invoke(OptimisticCreateIfNotExistsInterceptor.java:69)
| at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
| at org.jboss.cache.interceptors.OptimisticValidatorInterceptor.invoke
(OptimisticValidatorInterceptor.java:87)
| at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
| at org.jboss.cache.interceptors.OptimisticLockingInterceptor.invoke
(OptimisticLockingInterceptor.java:126)
| at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
| at org.jboss.cache.interceptors.TxInterceptor.handleNonTxMethod
(TxInterceptor.java:365)
| at org.jboss.cache.interceptors.TxInterceptor.invoke(TxInterceptor.java
:160)
| at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
| at org.jboss.cache.interceptors.CacheMgmtInterceptor.invoke
(CacheMgmtInterceptor.java:138)
| at org.jboss.cache.TreeCache.invokeMethod(TreeCache.java:5863)
| at org.jboss.cache.TreeCache.get(TreeCache.java:3627)
| at org.jboss.cache.TreeCache.get(TreeCache.java:3608)
|
Stack #3
"http-0 (See http://ttp-0.ora-code.com).0.0.0-8080-27" daemon prio=1 tid=0x09643720 nid=0x2fc0 in Object.wait()
[0x978f7000..0x978f71b0]
| at java.lang.Object (Native Method)
| - waiting on <0xc3c65dc0> (a org.apache.tomcat.util.net
.MasterSlaveWorkerThread)
| at java.lang.Object (Object.java:474)
| at org.apache.tomcat.util.net.MasterSlaveWorkerThread
(MasterSlaveWorkerThread.java:81)
| - locked <0xc3c65dc0> (a org.apache.tomcat.util.net
.MasterSlaveWorkerThread)
| at org.apache.tomcat.util.net.MasterSlaveWorkerThread
(MasterSlaveWorkerThread.java:107)
| at java.lang.Thread (Thread.java:595)
|
TreeCache Configuration
<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="ClusterName">FCXp_hibernate</attribute>
| <attribute name="CacheMode">LOCAL</attribute>
| <attribute name="SyncReplTimeout">10000</attribute>
| <attribute name="LockAcquisitionTimeout">15000</attribute>
| <attribute name="FetchInMemoryState">false</attribute>
| <attribute name="NodeLockingScheme">OPTIMISTIC</attribute>
|
| <attribute name="EvictionPolicyClass"> org.jboss.cache.eviction
.LRUPolicy </attribute>
| <attribute name="EvictionPolicyConfig">
| <config>
| <attribute name="wakeUpIntervalSeconds">10000</attribute>
| <!-- Cache wide default -->
| <region name="/_default_">
| <attribute name="maxNodes">200000</attribute>
| <attribute name="timeToIdleSeconds">10000</attribute>
| </region>
| </config>
| </attribute>
| </mbean>
| </server>
View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic
&p=4065227#4065227
Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode
=reply&p=4065227
__ ____ ____ ____ ____ ____ ____ ____ ____ ____
jboss-user mailing list
jboss-user@(protected)
https://lists.jboss.org/mailman/listinfo/jboss-user
|
|
|
