Hi all,

We're trying to upgrade to DM 1.0.2 to keep up with progress. After
upgrading the db and the code we ran into a huge performance issue.
Everything was working 2-3 times slower. I don't know the reason, but
we had to roll back and return back to investigation.

The time difference is easily reproducible on our unit tests, but I
can't completely isolate it. I have these tests so far: 
http://gist.github.com/629001
. They clearly show 2x performance degradation in saving and reading
json, but not much else.

As I've seen around 3x slowdown, I can't say I nailed the root cause.

Any thoughts on what could be the cause and suggestions on how to
isolate the problem are greatly appreciated.

Thanks!
Alex

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