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Re: 8 hours tests ends with inconsistent DB.

I apologize for not using the term "benchmark" correctly. One may have different expectations about the result of a "benchmark":

a) results
b) comparable results

if b) applies you are right about missing specs, but I guess the OP just wanted to test the limits of OL and the issue was not poor performance but corrupt DB and lack of stability under extrem load. You cannot blame Sleepycat for that (bugs aside).

At Zope Corporation (-> Open-Source web application server Zope) we had several very intelligent people trying to develop a data storage backend for Zope using BerkeleyDB for a couple years. Just a few weeks ago that attempt was finally given up on. We were unable to work around all the BDB weirdnesses and a lot of the time it seems Sleepycat wasn't all that responsive when it came to bugfixes (several were uncovered by our work) or suggestions. I would not be surprised if at least some of those corruptions can be blamed squarely on BDB bugs.