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From: Greg Sabino Mullane <greg@turnstep.com>
To: pgsql-performance@postgresql.org
Subject: Re: Configuration Recommendations
Date: Wed, 25 Apr 2012 17:08:11 -0000
Message-ID: <0c2259a177059d4f993856cb643d9c96@biglumber.com> (raw)
In-Reply-To: <CAM9pMnPUdcm1JJ75VnUaf6=JZWDvooNd+bOuYeJ_mJq6WSAKTA@mail.gmail.com>


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> Is it established practice in the Postgres world to separate indexes
> from tables?  I would assume that the reasoning of Richard Foote -
> albeit for Oracle databases - is also true for Postgres:

Yes, it's an established practice. I'd call it something just short of 
a best practice though, as it really depends on your situation. I'd 
take those articles with a grain of salt, as they are very 
Oracle-specific (e.g. we do not have fat indexes (yet!), nor segments). 
I also find his examples a bit contrived, and the whole "multi-user" 
argument irrelevant for common cases. I lean towards using separate 
tablespaces in Postgres, as the performance outweighs the additional 
complexity. It's down on the tuning list however: much more important 
is getting your kernel/volumes configured correctly, allocating 
shared_buffers sanely, separating pg_xlog, etc.

- -- 
Greg Sabino Mullane greg@turnstep.com
End Point Corporation http://www.endpoint.com/
PGP Key: 0x14964AC8 201204251304
http://biglumber.com/x/web?pk=2529DF6AB8F79407E94445B4BC9B906714964AC8
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