Darren Hartford wrote:
Have been having similar issues, and my 'psuedo-hack' tests show similar
results to Georg, so thank you Georg for pointing out that the database
lookups are not the problem, but the object conversion piece.

I don't wish to sell other products, but for a reference, has anyone
seen a difference if they switch to another CMP Persistance engine such
as Gemstone?  I tried their eval on Jboss3.0.3, but I couldn't get it to
work in my environment.  Would be nice to know as a reference if solving
I don't mind you selling Gemstone as they are a JBoss partner. Gemstone should be significantly faster then almost any persistence code as it is using a fast persistent object cache under the covers so there is no object conversion. Also relationship navigation is super fast because they have live references in cache and I need to do a db call.

the entity-bean performance is clearly tied to CMP/Persistance, and also
have available proven workarounds for people that have short timelines
(yeah, I'm one of the many :-P). Please do not debate about commercial
versus open-source methodology, just looking for solution to immediate
business problems and methods to identify areas of improvements :-).
I plan on running Gerog's test soon as there is really no reason for the code to be any slower, but I am working on a new prefetch cache that can merge at the end of a tx.

Oh, and LIMIT/OFFSET's would be awesome!!!
Agreed.

-dain



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