You could write a Python script that iterated over the transactions and managed an explicit list of objects involved in transactions, but that's a lot more code than massaging the fsdump output. fsdump is really useful for understand what's happening in a filestorage. One advantage of the python approach is that it would work with directory storage, too.

BTW, I wonder what version of ZODB boston.com is running. I'd be interested to know what effect MVCC has for them.

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