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From "Patrick Linskey" <plins...@gmail.com>
Subject Re: EntityManager memory usage
Date Mon, 05 Nov 2007 21:11:24 GMT
That is surprising.

Before we move on and consider this resolved, can you tell us more
about your system? Does your application put entities into any sort of
global or shared state? What do your configuration options look like?

Thanks,

-Patrick

On Nov 5, 2007 1:08 PM, Marc Siegel <marc.siegel.17@gmail.com> wrote:
> Hi Patrick,
>
> By creating EntityManagers and discarding (setting last reference to
> null), the memory usage pattern in YourKit became the expected
> "saw-tooth" pattern, and everything seems to work now.
>
> Thanks for your help,
> -Marc
>
>
>
> On 11/5/07, Marc Siegel <marc.siegel.17@gmail.com> wrote:
> > Hi Patrick, I will post the result here after I try that.
> >
> > Thanks
> > -Marc
> >
> > On 11/5/07, Patrick Linskey <plinskey@gmail.com> wrote:
> > > Do you reuse objects from one transaction in subsequent transactions?
> > > If not, what happens if you close the EM and get a new one at the end
> > > of every tx?
> > >
> > > -Patrick
> > >
> > > On Nov 5, 2007 10:46 AM, Marc Siegel <marc.siegel.17@gmail.com> wrote:
> > > > > > The strange thing is, I ran my application in a profiler (YourKit),
> > > > > > and no memory is being leaked. Heap usage had just fallen to
28MB
> > > > > > after garbage collection when the crash occurs.
> > > > >
> > > > > Hmm. That is odd.
> > > > >
> > > > > Are you running with the OpenJPA enhancer? Are you periodically
> > > > > flushing your transactions (or are your transactions short-lived)?
> > > >
> > > > To answer your questions
> > > >   - Yes, I am running the opanjpa enhancer at build-time
> > > >   - No, I am not flushing transactions, but Yes, they are short lived
> > > > and commit at conclusion.
> > > >
> > > > -Marc
> > > >
> > >
> > >
> > >
> > > --
> > > Patrick Linskey
> > > 202 669 5907
> > >
> >
>



-- 
Patrick Linskey
202 669 5907

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