Re: [eclipselink-users] memory usage

[Tim Hollosy <hollosyt@xxxxxxxxx>]

I didn't mean for you to take it that way, I just meant what benefit
do you get besides Entity re-use? Unless it's the sort of thing that
happens enough that you'd want to keep the shared cache up to date I
can't think of a great reason to use JPA for it with the
memory/performance hit you take registering objects in the cache,
constructing new instances, etc.

./tch



On Mon, Oct 19, 2009 at 6:05 PM, David Parker <dap@xxxxxxxxxxxxxxxxxxxx> wrote:
> Because our application is built in terms of JPA Objects. This is a small
> part of our app, a data conversion from another version of our system. Your
> response is almost like asking why I didn't write it in perl...or maybe that
> is what you are suggesting?
>
> On Oct 19, 2009, at 5:52 PM, Tim Hollosy wrote:
>
>> I don't have a good answer, I'm just curious as to why in the world
>> you'd want to use JPA for this sort of job?
>>
>> ./tch
>>
>>
>>
>> On Mon, Oct 19, 2009 at 5:51 PM, David Parker <dap@xxxxxxxxxxxxxxxxxxxx>
>> wrote:
>>>
>>> I am running a long data import that uses eclipselink 1.1.2 for
>>> persistence.
>>> I see memory increasing slowly but surely as it goes along. The YourKit
>>> profiler does not identify anything as  a link, but I do seem to have an
>>> increasing "retained size" for
>>>
>>> org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork
>>> [Stack
>>> Local]
>>>
>>> I see there is a clear method on TransactionWrapperImpl, but that does
>>> not
>>> seem to be in the JPA EntityTransaction API.
>>>
>>> Is there a best practice for long running data imports? Should I be
>>> clearing
>>> something?
>>>
>>> Thanks.
>>>
>>>
>>> =============================================
>>> David Parker
>>> dap@xxxxxxxxxxxxxxxxxxxx
>>>
>>>
>>>
>>>
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>>>
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>
> =============================================
> David Parker
> dap@xxxxxxxxxxxxxxxxxxxx
>
>
>
>
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