> The Linux server is on a cloud and has 4GB RAM and 2 CPUs and the
> same server is running both master and slave (these are separate in
> production). If you'd like any more details please ask. Here are the
> pgbench results:

Presumably you created a new cloud server for 9.2, yes?  I'd guess that
the difference is between the two cloud servers.  Try testing, for
example, bonnie++ on the two servers.

-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com


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