So, if you guys have been following the mailing list, we've been having
some issues with slices requiring multithreaded support, but the
multithreaded support uses mostly a global lock, thus negating a huge
performance gain used by Slices, where it executes queries in parallel.
So it looks like a long-term solution would be to review the locks
within OpenJPA and try to make them much more granular, but this looks
like it might be a very hard thing to do without everyone's help, lots
of unit tests, etc etc..
I was wondering about another option, is to use Read/Write locks. Maybe
that will allow more granularity, allowing more threads to do more work,
without drastically changing the way things work. ( We would change all
current locks to be writeLocks, then slowly change them to readLocks on
a case by case basis..)
What are your thoughts towards an idea like this?
If I can start to submit a few patches, would they be totally ignored?
