<http://postgresql.1045698.n5.nabble.com/file/n5735593/pg_drift.png> 



86% of the updates are HOT updates!

The difference between the first and second line of this image above is that
366 updates happened of which 299 where HOT. And a vacuum on the table was
run. 
Look at the retuples number change after the vacuum!

Open transactions... how does this impact those numbers?



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