Hi,
DatabaseRegistry.loadDatabase() takes long time to load the database when more than 30 concurrent transaction are created each from a different JVM. As the number concurrent transaction increases the time taken to load database also increases.
The System configuration is:
processor model name : Intel(R) Xeon(TM) CPU 2.40GHz
MemTotal: 4012816 kB
Platform : Red Hat Linux (2.4.19)
MySQL database 4.0.17
Thanks,
Banujee
PS: The Castor tracers are attached to this email.
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Jul 22, 2004 8:37:53 AM org.exolab.castor.jdo.JDO getDatabase SEVERE: ENTERING JDO :: getDatabase() Jul 22, 2004 8:37:53 AM org.exolab.castor.jdo.JDO getDatabase SEVERE: Loading database :: Doing heavy work Jul 22, 2004 8:37:53 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: ENTERING DatbaseRegistry :: loadDatabase() Jul 22, 2004 8:37:53 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: before Unmarshaller(Database.class) Jul 22, 2004 8:37:53 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: after Unmarshaller(Database.class) Jul 22, 2004 8:37:53 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: before Unmarshal(database configuration file) Jul 22, 2004 8:37:56 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: before Unmarshal(database configuration file) Jul 22, 2004 8:37:56 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: before construct mapping configuration Jul 22, 2004 8:37:57 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: after construct mapping configuration Jul 22, 2004 8:37:57 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: before loading the mapping file Jul 22, 2004 8:38:08 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: after loading the mapping file Jul 22, 2004 8:38:08 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: Before Get DB driver Jul 22, 2004 8:38:29 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: After Get DB driver Jul 22, 2004 8:38:29 AM org.exolab.castor.jdo.JDO getDatabase SEVERE: Loaded database :: Heavy work done Jul 22, 2004 8:38:29 AM org.exolab.castor.jdo.JDO getDatabase SEVERE: JDO :: DB Jul 22, 2004 8:38:29 AM org.exolab.castor.jdo.JDO getDatabase SEVERE: Exit JDO :: return new DatabaseImpl
Jul 22, 2004 8:21:20 AM org.exolab.castor.jdo.JDO getDatabase SEVERE: ENTERING JDO :: getDatabase() Jul 22, 2004 8:21:20 AM org.exolab.castor.jdo.JDO getDatabase SEVERE: Loading database :: Doing heavy work Jul 22, 2004 8:21:20 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: ENTERING DatbaseRegistry :: loadDatabase() Jul 22, 2004 8:21:20 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: before Unmarshaller(Database.class) Jul 22, 2004 8:21:20 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: after Unmarshaller(Database.class) Jul 22, 2004 8:21:20 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: before Unmarshal(database configuration file) Jul 22, 2004 8:21:20 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: before Unmarshal(database configuration file) Jul 22, 2004 8:21:21 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: before construct mapping configuration Jul 22, 2004 8:21:21 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: after construct mapping configuration Jul 22, 2004 8:21:21 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: before loading the mapping file Jul 22, 2004 8:21:21 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: after loading the mapping file Jul 22, 2004 8:21:21 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: Before Get DB driver Jul 22, 2004 8:21:23 AM org.exolab.castor.jdo.engine.DatabaseRegistry loadDatabase SEVERE: DatbaseRegistry :: After Get DB driver Jul 22, 2004 8:21:23 AM org.exolab.castor.jdo.JDO getDatabase SEVERE: Loaded database :: Heavy work done Jul 22, 2004 8:21:23 AM org.exolab.castor.jdo.JDO getDatabase SEVERE: JDO :: DB Jul 22, 2004 8:21:23 AM org.exolab.castor.jdo.JDO getDatabase SEVERE: Exit JDO :: return new DatabaseImpl
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