Long running query in new production, not so long in old

Good evening

We are moving to a new VM environment (expedient) and have one query that
typically runs in 22 - 25 seconds in our old environment, but is running in
about 1 hour, 20 minutes in our new. I'd like some insight as to why the
explain is showing shared buffer hits numbering over 113 milliion
in the new environment and only 445 thousand in the old. I have sent the
explains along with the table descriptions, row counts, the one function
that I know causes the bottleneck, the query, some relevant configuration
settings in postgresql conf (identical in both environments)
and a listing from top in both environments, showing memory, shared memory,
and cpu.

Everything seems to be identical or close, except for the shared buffer
count in the explain.
Any insight would be appreciated.

Thank you,

--
*Mark Steben*
Database Administrator
@utoRevenue <http://www.autorevenue.com/> | Autobase
<http://www.autobase.net/>
CRM division of Dominion Dealer Solutions
95D Ashley Ave.
West Springfield, MA 01089
t: 413.327-3045
f: 413.383-9567

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