full vacuum really slows down query

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От Jason Long
Тема full vacuum really slows down query
Дата
Msg-id 48470FA7.9010608@supernovasoftware.com
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Ответы Re: full vacuum really slows down query  ("Nathan Boley" <npboley@gmail.com>)
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I have a query that takes 2 sec if I run it from a freshly restored
dump.  If I run a full vacuum on the database it then takes 30 seconds.

Would someone please comment as to why I would see a 15x slow down by
only vacuuming the DB?

I am using 8.3.1

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