This application is retrieving sets of hierarchical data via XML-RPC and persisting them in a relational manner via OpenJPA.
Mac 10.4 Java 1.5.0_07 OpenJPA 1.0 Property-based access Build-time enhancement Entities share a common ancestor tree for shared functionality: EntityWithId - Id type IDENTITY EntityWithCreatedAt - @PrePersist sets a createdAt timestamp EntityWithUpdatedAt - @PreUpdate sets an updatedAt timestamp (currently disable due to the issue discussed on this list with spurious UPDATE's called on all objects in the presence of this annotation). EntityWithSynchronizedAt - isChanged (boolean) and modifiedAt (timestamp) Does that help at all? -Marc On 11/5/07, Patrick Linskey <[EMAIL PROTECTED]> wrote: > 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 <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> wrote: > > > Hi Patrick, I will post the result here after I try that. > > > > > > Thanks > > > -Marc > > > > > > On 11/5/07, Patrick Linskey <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> 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 >
