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Re: More buffers used than a relation's relpages - Mailing list pgsql-general

From Andres Freund
Subject Re: More buffers used than a relation's relpages
Date
Msg-id 20130604130406.GA2854@alap2.anarazel.de
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In response to More buffers used than a relation's relpages  (Amit Langote <amitlangote09@gmail.com>)
Responses Re: More buffers used than a relation's relpages  (Amit Langote <amitlangote09@gmail.com>)
List pgsql-general
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On 2013-06-04 11:29:44 +0900, Amit Langote wrote:
> In what cases can a relation use more buffers (in shared memory) than
> its pg_class.relpages?

relpages is primarily updated by (auto-)vacuum, (auto-)analyze, so it
frequently lags behind reality in a growing relation. Why do you need an
exact value?

Greetings,

Andres Freund

--
 Andres Freund                       http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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