Date: Fri, 9 Jun 2017 09:36:37 -0500
From: Kenneth Marshall <ktm@rice.edu>
To: Frits Jalvingh <jal@etc.to>
Cc: Andreas Kretschmer <andreas@a-kretschmer.de>,
	pgsql-performance@postgresql.org
Subject: Re: Improving PostgreSQL insert performance
Message-ID: <20170609143637.GD26506@aart.rice.edu>
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On Fri, Jun 09, 2017 at 01:56:58PM +0000, Frits Jalvingh wrote:
> Hi Kenneth, Andreas,
> 
> Thanks for your tips!
> 
> I increased shared_buffers to 8GB but it has no measurable effect at all. I
> think that is logical: shared buffers are important for querying but not
> for inserting; for that the speed to write to disk seems most important- no
> big reason to cache the data if the commit requires a full write anyway.
> I also changed the code to do only one commit; this also has no effect I
> can see.
> 
> It is true that Oracle had more memory assigned to it (1.5G), but unlike
> Postgres (which is completely on a fast SSD) Oracle runs on slower disk
> (ZFS)..
> 
> I will try copy, but I first need to investigate how to use it- its
> interface seems odd to say the least ;) I'll report back on that once done.
> 
> Any other tips would be welcome!
> 
> Regards,
> 
> Frits

Hi Frits,

Here is an article that is still valid:

https://www.depesz.com/2007/07/05/how-to-insert-data-to-database-as-fast-as-possible/

Regards,
Ken


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