query to find out # of buffer hits vs. # of disk reads ?

From: Kevin Kempter <kevink(at)consistentstate(dot)com>
To: pgsql-admin(at)postgresql(dot)org
Subject: query to find out # of buffer hits vs. # of disk reads ?
Date: 2009-01-14 16:47:36
Message-ID: 200901140947.36863.kevink@consistentstate.com
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Hi all;

Anyone know what system catalogs I need to query to find out # of disk reads
and # of memory / buffercache reads ?

Thanks in advance

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