Re: big select is resulting in a large amount of disk writing by kjournald

From: Greg Smith <greg(at)2ndquadrant(dot)com>
To: Joseph S <jks(at)selectacast(dot)net>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: big select is resulting in a large amount of disk writing by kjournald
Date: 2009-12-09 19:53:56
Message-ID: 4B200054.3020209@2ndquadrant.com
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Joseph S wrote:
> So I run "select count(*) from large_table" and I see in xosview a
> solid block of write activity. Runtime is 28125.644 ms for the first
> run. The second run does not show a block of write activity and takes
> 3327.441 ms
http://wiki.postgresql.org/wiki/Hint_Bits

--
Greg Smith 2ndQuadrant Baltimore, MD
PostgreSQL Training, Services and Support
greg(at)2ndQuadrant(dot)com www.2ndQuadrant.com

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