Philippe Durieux wrote:
> Olivier HEDIN wrote:
> >
> > Hi,
> >
> > We are currently experimenting the following problem with JOnAS
2.1.1 :
> >
> > We are creating lots of CMP Beans (about 20.000) of the same type.
> > The memory grows and grows until an OutOfMemoryError or something
like
> > "Transaction inconsistency error" occurs.
> > When we run the EJBServer with -Xrunhprof, the HPJMeter shows that
the
> > "JOnASMyBeanRemote_Stub", "JOnASMyBeanRemote",
"JOnASMyBeanRemote_Skel"
> > and the "MyBeanPK" that are created are never removed from the
memory.
> > The other objects "JOnASMyBeanHome", "JOnASMyBeanHome_Stub",
> > "JOnASMyBeanHome_Skel", "JOnASMyBean" are only instancied once and
> > that's ok with them.
> >
> > Is there a problem with JOnAS or with GC ?
> >
> > Transaction attribute is "Mandatory".
> >
> This is not normal if your orb is rmi, because the garbage collector
> should remove the Remote objects. All is normal if your orb is Jeremie
> because the garbage collector is not distributed.
> You can try to run the garbage collector in the server (JonasAdmin
-gc)
> to see if the objects are removed then.
> --
> Philippe Durieux ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Bull - 1 rue de Provence - 38432 Echirolles Cedex France
> [EMAIL PROTECTED]
> -> Download our EJBServer at http://www.evidian.com/ejb <-
We continued our tests. The first one shows that there seems to be no
direct
problem with the garbage collector (client side, EJBServer site and
rmiregistry side). The JVM option -verbose:gc shows that the gc has time
to
make his job.
So we take a look at GenIC generated code.
The behaviour of the JOnASJMeterTestHome is :
1) Creation of an ejbobj = new JOnASJMeterTestRemote,
2) Attach it to a JOnASJMeterTestBean that comes from the pool of free
instances
3) Call of the method "putEJBObject(ejbobj)" inherited from JEntityHome
4) return the ejbobj it to the client side.
The points 1, 2 and 4 seems OK, but what about the putEJBObject ?
When are the ejbobjs removed from this apparent storage facility ?
It might be responsible that after 10.000, 20.000, 50.000 or more
depending of the amount of memory
available for EJBServer the memory if full of JOnASJMeterTestRemote,
JOnASJMeterTestRemote_Stub and JOnASJMeterTestRemote_Skel and crashes.
Is this analyse correct ?
Is this a bug of JOnAS ?
Is there something particular to do on client side ?
Thanks for your answer.
Olivier HEDIN
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