[OSM-dev] Planet file space requirements

[Linden Varley]

I disagree. Weekly writes to the SSD will not be that bad and the performance benefits far outweighs the disadvantages. We can do a full planet file load in 4 hours and database reads are outstanding to the point where it's not even necessary to pre-cache tiles.

- Linden

-----Original Message-----
From: Stefan de Konink [mailto:stefan at konink.de]
Sent: Friday, 30 October 2009 9:56 AM
To: Linden Varley
Cc: Frederik Ramm; dev at openstreetmap.org
Subject: Re: [OSM-dev] Planet file space requirements

On Fri, 30 Oct 2009, Linden Varley wrote:

> Is there potential to be able to do differential updates on a non-slim imported db?
>
> Reason I ask is I have plenty of memory, but little DB space (SSD) and I would like to do weekly diffs, import with osm2pgsql and get a tile expiry list to re-cache changed tiles.
>
> If not, I'll import with slim on a larger disk and do a filesystem copy across to the SSD.

I rather suggest to ditch the SSD, the chances that it will be killed (in
performance) are rather high with non-static datasets as OSM.


Stefan


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