I was going to take a look at this in any event, but feel free to open
a Jira. This will help to track it indeed.
I wrote applications with Cayenne that insert millions of rows.
There's always some tweaking involved with high-end cases no matter
which framework you use.
Andrus
On Jul 23, 2010, at 10:11 AM, Cosmin Marian wrote:
> Hello,
>
> I didn't have time to investigate this, mostly because I was busy
> moving parts of our persistence layer to openjpa (which is a pain to
> make work).
> Our server can make millions of insert per day so this problem
> prevents us from using Cayenne.
> When I will have some time I will try to debug it but meanwhile I
> was wondering if this at least was added as a bug so it will receive
> attention latter.
>
> Thanks,
> Cosmin
>
>
>
> Andrus Adamchik wrote:
>> You may try to compare profiles of individual loop runs. I.e. same
>> code, but different value of "i" and see where they differ.
>>
>> Andrus
>>
>>
>> On Jul 14, 2010, at 2:53 PM, cosmin.maria..odium-it.com wrote:
>>
>>> Hello,
>>>
>>> Yes, I am on Cayenne 3.0 release.
>>>
>>> I profiled the test but got a bit lost. Eclipse profiler is not
>>> very easy
>>> to use and cayenne is quite complex.
>>>
>>> From what I have seen, ObjectStore.postprocessAfterCommit() takes
>>> a lot of
>>> time.
>>>
>>> Actually, from my two tests (I set the relation -> slow, I don't
>>> set it ->
>>> constant time) I noticed that postprocessAfterCommit() takes much
>>> more
>>> time in the first case.
>>>
>>> If you have an idea on what to look for in a profile or for a
>>> better test,
>>> let me know, I will do the tests.
>>>
>>> Thanks,
>>> Cosmin
>>>
>>> Andrus Adamchik wrote:
>>>> This is odd indeed. Are you on Cayenne 3.0?
>>>>
>>>> I am not aware of this issue. All operations involved are
>>>> constant time
>>> ops regardless of the number of objects previously cached (such as
>>> entry
>>> lookup in a HashMap or a list.add(..) operation).
>>>>
>>>> So I may try to run this code in profiler to see why it is
>>>> slowing down.
>>> If you have access to a profiler and willing to profile it yourself,
>>> this will help a lot of course :-)
>>>>
>>>> Andrus
>>
>>
>
>
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