Re: Hardware HD choice...

From: "Lionel" <lionel(at)art-informatique(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: Hardware HD choice...
Date: 2008-10-24 10:08:53
Message-ID: gds6rm$tvb$1@news.hub.org
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"Scott Marlowe" wrote:
> I second this. Partitioning in time in past reporting databases
> resulted in huge performance improvements for select queries.

Most statements will load data from a single year, but multiple monthes.
I have a integer field containing the year and will use it for
partitionning.
It will also help a lot to remove one year after 4 years of activity.

Actually this same database is used with 2 millions of lines per year
(instead of 30). It is loaded with 3 years and runs quite fast
unpartitionned on a 4 years old single SCSI HD with 2Go of RAM, single core
pentium4.
It runs a LOT faster on a quad xeon 2.83GHz with 8Go of ram and SATA HD,
which is quite common now for dedicated servers.

I tried partitionning on it: it showed no performance gain for such a small
size, but it is an evidence that it will help with 30 millions of
lines/year.

OK, thanks to all your recommandations, I will ask hosters for a RAID10
4x250go SATA.

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