Hello, the finalize() is in one of the parent classes.
http://grepcode.com/file/repo1.maven.org/maven2/postgresql/postgresql/9.1-901.jdbc4/org/postgresql/jdbc2/AbstractJdbc2Statement.java#803 I am not sure if youkit shows unreferenced or referenced objects in "pending finalization". If it is referenced objects, the statements might hang around in a prepared statement cache. If they are unreferenced the finalizer thread might be slow or blocked. I would try to do an heapdump to investigate. When properly using datasource pools and tomcat facilities a leak is unlikely. If you have some hardcoded jdbc code, that might also be a possible explanation for the number. Gruss Bernd Am Wed, 19 Oct 2016 20:16:01 +0000 schrieb Hongkai Liu <hongkai....@ericsson.com>: > Hi, > > > our application (Gerrit) consumes more and more memory and Yourkit > showed up with 18M > Jdbc4PreparedStatement<http://grepcode.com/file/repo1.maven.org/maven2/postgresql/postgresql/9.1-901.jdbc4/org/postgresql/jdbc4/Jdbc4PreparedStatement.java> > objects in "pending finalization" which uses up 21G of mem. > > The heap is taken immediately after two GCs. > > > I wonder why those objects survived of GCs. > > According to Yourkit > doc<https://www.yourkit.com/docs/java/help/reachability.jsp>, the > objects in "pending finalization" are from the class with an > implemenation of finalize() method while > Jdbc4PreparedStatement<http://grepcode.com/file/repo1.maven.org/maven2/postgresql/postgresql/9.1-901.jdbc4/org/postgresql/jdbc4/Jdbc4PreparedStatement.java> > is without it. > > Is it about G1GC? > > > Any hint is appreciated. > > > BR, > > Hongkai > > > ================================ > > > Here are the screenshots of Yourkit and App info. > > [cid:82499a3c-9de5-4ae9-b0f3-c9f2e173aa40] > > [cid:5dd8cdb6-7736-4294-9bc5-698ad47ecf29] > > _______________________________________________ hotspot-gc-use mailing list hotspot-gc-use@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use
