From: andrew@pillette.com
To: Colton A Smith <smith@cs.utk.edu>
Cc: pgsql-performance@postgresql.org
Subject: Re: poor performance involving a small table
Date: Mon, 30 May 2005 19:31:06 -0700
Message-ID: <200505310231.j4V2V6e25466@pillette.com> (raw)
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Colton A Smith <smith@cs.utk.edu> wrote ..
------------------------------------------------------------------------------------------------
> Seq Scan on sensor (cost=0.00..1.25 rows=1 width=6) (actual
> time=0.055..0.068 rows=1 loops=1)
> Filter: (sensor_id = 12)
> Total runtime: 801641.333 ms
> (3 rows)
Do you have some foreign keys pointing in the other direction? In other words, is there another table such that a delete on sensors causing a delete (or a check of some key) in another table? EXPLAIN doesn't show these. And that might be a big table missing an index.
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To: pgsql-performance@postgresql.org
Cc: andrew@pillette.com, smith@cs.utk.edu
Subject: Re: poor performance involving a small table
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