Re: Checkpoints are occurring too frequently...

From: Christopher Browne <cbbrowne(at)acm(dot)org>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Checkpoints are occurring too frequently...
Date: 2005-07-12 20:38:14
Message-ID: m3oe972215.fsf@mobile.int.cbbrowne.com
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> LOG: checkpoints are occurring too frequently (19 seconds apart)
> HINT: Consider increasing the configuration parameter
> "checkpoint_segments".
> LOG: checkpoints are occurring too frequently (12 seconds apart)
> HINT: Consider increasing the configuration parameter
> "checkpoint_segments".
> LOG: checkpoints are occurring too frequently (12 seconds apart)
> HINT: Consider increasing the configuration parameter
> "checkpoint_segments".
> LOG: checkpoints are occurring too frequently (11 seconds apart)
> HINT: Consider increasing the configuration parameter
> "checkpoint_segments".
> LOG: checkpoints are occurring too frequently (12 seconds apart)
> HINT: Consider increasing the configuration parameter
> "checkpoint_segments".
>
> What does this mean and what causes it ???

This generally happens as a result of having LOTS of updates going
into the database.

If you're doing bulk loads of data, this is absolutely normal.

It probably is a good idea to increase the specified config parameter;
that can improve performance for most of the cases where the message
comes up.
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