[jboss-user] [IronJacamar] - Re: Thread BLOCKED on registerConnection/unregisterConnection?

Vadim Kopichenko [https://community.jboss.org/people/vkopichenko] created the discussion "Re: Thread BLOCKED on registerConnection/unregisterConnection?" To view the discussion, visit: https://community.jboss.org/message/724971#724971 -------------------------------------------------------------- During performance tests on JBoss 4.2.3.GA we've also faced much BLOCKED threads on org.jboss.resource.connectionmanager.CachedConnectionManager.registerConnection(CachedConnectionManager.java:288) and org.jboss.resource.connectionmanager.CachedConnectionManager.unregisterConnection(CachedConnectionManager.java:318) The connection pool was not exhausted. Digging in sources led to this: http://grepcode.com/file/repository.jboss.org/nexus/content/repositories/... http://grepcode.com/file/repository.jboss.org/nexus/content/repositories/... 286      if (debug) 287      { 288         synchronized (connectionStackTraces) 289         { 290            connectionStackTraces.put(connection, new Throwable("STACKTRACE")); 291         } 292      } So the problem is not about slow sql but about debug synchronization. This can be disabled in deploy/jbossjca-service.xml with <attribute name="Debug">false</attribute>. -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/724971#724971] Start a new discussion in IronJacamar at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]