[hibernate-issues] [Hibernate-JIRA] Updated: (HHH-7190) Cache JDBC proxy class defintions
Steve Ebersole (JIRA)
noreply at atlassian.com
Thu Mar 22 09:15:52 EDT 2012
[ https://hibernate.onjira.com/browse/HHH-7190?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Ebersole updated HHH-7190:
--------------------------------
Summary: Cache JDBC proxy class defintions (was: [Performance] - Degradation hibernate time after migration hibernate 3.3.1.GA --> 4.0.1)
> Cache JDBC proxy class defintions
> ---------------------------------
>
> Key: HHH-7190
> URL: https://hibernate.onjira.com/browse/HHH-7190
> Project: Hibernate ORM
> Issue Type: Improvement
> Components: core
> Affects Versions: 4.0.1, 4.1.1
> Environment: java version "1.6.0_23"
> Java(TM) SE Runtime Environment (build 1.6.0_23-b05)
> Java HotSpot(TM) 64-Bit Server VM (build 19.0-b09, mixed mode)
> Reporter: Lucas POUZAC
> Labels: performance
> Attachments: hibernate.jpg
>
>
> After migrating our application to version 4.0.1 of hibernate, we noticed a performance degradation. (same problem with the version 4.1.1)
> Before migration, the average response time of our http request was 747ms (during load test).
> Since the migration, the average response time is greater than 1200ms (during the same load test).
> After recording the behavior of the JVM, we note that Hibernate uses methods of the java api with synchronized blocks (java.lang.reflect.Proxy.getProxyClass (...)). See attachment.
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