>>Seems like there is no easy answer. We are going to try to see what the overhead is. One would think that the only overhead would be at instanciation, and destroy, but maybe formset events processing has a cost associated. Some of our automated processes are very real time intensive, so a small overhead in event processing may affect the long term results.
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>I'll be interested in the results of your test.

OK, I'll post them. Trying to decide on some good benchmark tests now.
Simple, but reasonably accurate, in a multi-task environment ? Suggestions ?