[JBoss JIRA] Created: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
4:24 p.m.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public (Everyone can see)
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP1
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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4:29 p.m.
New subject: [JBoss JIRA] Commented: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=comments#action_12361931 ]
Phillip Thurmond commented on JBTM-218:
---------------------------------------
"SocketServerInvokerThread-10.4.32.8-70" prio=1 tid=0x0000002b29195730
nid=0x2a37 waiting for monitor entry [0x0000000053380000..0x0000000053381db0]
at java.util.Hashtable.get(Hashtable.java:335)
- waiting to lock <0x0000002aae70f800> (a java.util.Hashtable)
at
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.getTransaction(TransactionImple.java:1133)
at
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionManagerImple.getTransaction(TransactionManagerImple.java:53)
at
com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.getTransaction(BaseTransactionManagerDelegate.java:107)
at org.jboss.tm.TransactionLocal.getTransaction(TransactionLocal.java:292)
at org.jboss.tm.TransactionLocal.get(TransactionLocal.java:196)
at
org.jboss.ejb.plugins.PerTxEntityInstanceCache.getLocalCache(PerTxEntityInstanceCache.java:215)
at
org.jboss.ejb.plugins.PerTxEntityInstanceCache.get(PerTxEntityInstanceCache.java:73)
at
org.jboss.ejb.plugins.EntityInstanceInterceptor.invoke(EntityInstanceInterceptor.java:216)
at
org.jboss.ejb.plugins.EntityCreationInterceptor.invoke(EntityCreationInterceptor.java:76)
at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)
at
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:350)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:168)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:205)
at
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:138)
at org.jboss.ejb.EntityContainer.internalInvoke(EntityContainer.java:527)
at org.jboss.ejb.Container.invoke(Container.java:960)
at
org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:430)
at org.jboss.ejb.plugins.local.EntityProxy.invoke(EntityProxy.java:65)
at $Proxy132.getQty(Unknown Source)
at
org.spec.jappserver.mfg.workorderent.ejb.WorkOrderCmp20EJB.process(WorkOrderCmp20EJB.java:470)
at sun.reflect.GeneratedMethodAccessor142.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.invocation.Invocation.performCall(Invocation.java:359)
at
org.jboss.ejb.EntityContainer$ContainerInterceptor.invoke(EntityContainer.java:1187)
at
org.jboss.ejb.plugins.cmp.jdbc2.RelationInterceptor.invoke(RelationInterceptor.java:67)
at
org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invoke(EntitySynchronizationInterceptor.java:284)
at
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:158)
at
org.jboss.ejb.plugins.EntityReentranceInterceptor.invoke(EntityReentranceInterceptor.java:126)
at
org.jboss.ejb.plugins.EntityInstanceInterceptor.invoke(EntityInstanceInterceptor.java:278)
at
org.jboss.ejb.plugins.EntityCreationInterceptor.invoke(EntityCreationInterceptor.java:76)
at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)
at
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:350)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:168)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:205)
at
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:138)
at org.jboss.ejb.EntityContainer.internalInvoke(EntityContainer.java:527)
at org.jboss.ejb.Container.invoke(Container.java:960)
at
org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:430)
at org.jboss.ejb.plugins.local.EntityProxy.invoke(EntityProxy.java:65)
at $Proxy135.process(Unknown Source)
at
org.spec.jappserver.mfg.workorderses.ejb.WorkOrderSesEJB.scheduleWorkOrder(WorkOrderSesEJB.java:111)
at sun.reflect.GeneratedMethodAccessor113.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.invocation.Invocation.performCall(Invocation.java:359)
at
org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:237)
at
org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:158)
at
org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:169)
at
org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:63)
at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)
at
org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:63)
at
org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)
at
org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:350)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:168)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:205)
at
org.jboss.ejb.plugins.CleanShutdownInterceptor.invoke(CleanShutdownInterceptor.java:278)
at
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:138)
at org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:648)
at org.jboss.ejb.Container.invoke(Container.java:960)
at sun.reflect.GeneratedMethodAccessor109.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
at
org.jboss.invocation.unified.server.UnifiedInvokerHA.invoke(UnifiedInvokerHA.java:146)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:999)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:848)
at
org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:454)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:541)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:261)
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP1
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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4:47 p.m.
New subject: [JBoss JIRA] Updated: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Mark Little updated JBTM-218:
-----------------------------
Fix Version/s: (was: 4.2.3.SP1)
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
--
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12:53 a.m.
New subject: [JBoss JIRA] Updated: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Mark Little updated JBTM-218:
-----------------------------
Component/s: Transaction Core
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: Transaction Core
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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12:55 a.m.
New subject: [JBoss JIRA] Updated: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Mark Little updated JBTM-218:
-----------------------------
Component/s: JTA Implementation
(was: Transaction Core)
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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12:56 p.m.
New subject: [JBoss JIRA] Commented: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=comments#action_12361999 ]
Mark Little commented on JBTM-218:
----------------------------------
As with 216, this is called whenever a thread needs to get the currently associated
transaction (which could be an imported transaction, a deeply nested transaction etc.) The
transaction has multiple representations in JBossTS: JTA, core, JTS and WS-T. In this
case, obviously it's just JTA and core, but we need to do a mapping from one to the
other, which is what's happening here. It needs to be synchronized on all accesses.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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1:12 p.m.
New subject: [JBoss JIRA] Closed: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Mark Little closed JBTM-218.
----------------------------
Fix Version/s: 4.2.3.SP3
Resolution: Rejected
The datastructure needs to be synchronized on all accesses. A given thread may call this
operation (indirectly) many times during the coure of a transaction. Given the nature of
what is stored (transactions) a hash approach makes much more sense that any other
structure. Hashtable versus synchronized HashMap doesn't offer significant performance
benefits as far as I can see.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP3
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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10:17 a.m.
New subject: [JBoss JIRA] Reopened: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Phillip Thurmond reopened JBTM-218:
-----------------------------------
Sorry Mark, I mis-typed. I meant to say that the object should probably be changed to
ConcurrentHashMap. Whenever a hashtable is accessed, the whole object must be locked.
Using ConcurrentHashMap, only a portion of the object is locked, so the contention will be
reduced.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP3
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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5:03 a.m.
New subject: [JBoss JIRA] Commented: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=comments#action_12362496 ]
Mark Little commented on JBTM-218:
----------------------------------
We just GA-ed 4.2.3 so I'll take a look again at this for the next release.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.4
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
--
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5:03 a.m.
New subject: [JBoss JIRA] Updated: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Mark Little updated JBTM-218:
-----------------------------
Fix Version/s: 4.4
(was: 4.2.3.SP3)
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.4
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
--
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11:20 a.m.
New subject: [JBoss JIRA] Commented: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=comments#action_12362536 ]
Mark Little commented on JBTM-218:
----------------------------------
JBossTS 4.2.x is JDK 1.4 compliant, so ConcurrentHashMap won't work for us. 4.4, which
is targeted at AS 5.0 integration, may be 1.5 based, so we could look at that then.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.4
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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3:51 p.m.
New subject: [JBoss JIRA] Commented: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=comments#action_12362574 ]
Mark Little commented on JBTM-218:
----------------------------------
If I get a chance I'll try Doug Lea's concurrent.jar with 1.4 over the weekend.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.4
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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2:54 a.m.
New subject: [JBoss JIRA] Updated: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Mark Little updated JBTM-218:
-----------------------------
Affects Version/s: 4.2.3.SP3
(was: 4.2.3)
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3.SP3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.4
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
--
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3:01 a.m.
New subject: [JBoss JIRA] Updated: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Mark Little updated JBTM-218:
-----------------------------
Fix Version/s: 4.2.3.SP4
(was: 4.4)
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3.SP3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP4
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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3:47 a.m.
New subject: [JBoss JIRA] Updated: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Mark Little updated JBTM-218:
-----------------------------
Attachment: concurrent.jar
Build of Doug Lea's concurrent classes for JDK 1.4.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3.SP3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP4
Attachments: concurrent.jar, jbossjta-chm.jar
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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3:47 a.m.
New subject: [JBoss JIRA] Updated: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Mark Little updated JBTM-218:
-----------------------------
Attachment: jbossjta-chm.jar
Build using ConcurrentHashMap (needs concurrent.jar).
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3.SP3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP4
Attachments: concurrent.jar, jbossjta-chm.jar
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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3:49 a.m.
New subject: [JBoss JIRA] Commented: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=comments#action_12362614 ]
Mark Little commented on JBTM-218:
----------------------------------
Phillip, I've attached an unofficial build (JDK 1.4.2) that uses Doug Lea's
concurrent packages (also attached). Can you give it a try? With the tests I ran here I
saw between 20% and 5% improvement (though typically at the lower end of the scale). As
they say: your mileage may vary.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3.SP3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP4
Attachments: concurrent.jar, jbossjta-chm.jar
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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4:27 a.m.
New subject: [JBoss JIRA] Updated: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Mark Little updated JBTM-218:
-----------------------------
Attachment: jbossjta-ht.jar
Should be original Hashtable build.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3.SP3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP4
Attachments: concurrent.jar, jbossjta-chm.jar, jbossjta-ht.jar
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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4:34 a.m.
New subject: [JBoss JIRA] Updated: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=all ]
Mark Little updated JBTM-218:
-----------------------------
Attachment: jbossjta-sm.jar
Build with synchronized map.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3.SP3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP4
Attachments: concurrent.jar, jbossjta-chm.jar, jbossjta-ht.jar, jbossjta-sm.jar
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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4:36 a.m.
New subject: [JBoss JIRA] Commented: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=comments#action_12362617 ]
Mark Little commented on JBTM-218:
----------------------------------
Phillip, I'm not sure the tests I have on my laptop are able to show up much of a
difference. I've attached two more jars for you to try (jbossjta-ht.jar should be the
original jar, whereas jbossjta-sm.jar is one that uses a synchronized map). Let me know
what you see when you run your tests.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3.SP3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP4
Attachments: concurrent.jar, jbossjta-chm.jar, jbossjta-ht.jar, jbossjta-sm.jar
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
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10:16 a.m.
New subject: [JBoss JIRA] Commented: (JBTM-218) Contention on HashTable in com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
[ http://jira.jboss.com/jira/browse/JBTM-218?page=comments#action_12362714 ]
Phillip Thurmond commented on JBTM-218:
---------------------------------------
Thanks Mark! I'll test ASAP.
Contention on HashTable in
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.java
---------------------------------------------------------------------------------------------------
Key: JBTM-218
URL: http://jira.jboss.com/jira/browse/JBTM-218
Project: JBoss Transaction Manager
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: JTA Implementation
Affects Versions: 4.2.3.SP3
Reporter: Phillip Thurmond
Assigned To: Mark Little
Fix For: 4.2.3.SP4
Attachments: concurrent.jar, jbossjta-chm.jar, jbossjta-ht.jar, jbossjta-sm.jar
I'm seeing some contention on the object _transactions in the class
com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple. Most of the
contention happens in the getTransaction() method.
--
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7001
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7013
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20 comments
2 participants
participants (2)
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Mark Little (JIRA) -
Phillip Thurmond (JIRA)