[OSM-dev] Write PBF

[Anthony]

On Wed, Jun 1, 2011 at 8:23 AM, "Michael Prieß" <michael.priess at gmx.de> wrote:
> Hello,
>
> I found in the OSM Wiki the following article.
>
> http://wiki.openstreetmap.org/wiki/PBF_Format
>
> "It is also about 5x faster to write than a gzipped planet and 6x faster to read than a gzipped planet."
>
> Can anyone say how long do I need to write from database to pbf a country like Germany? Minutes, Hours, Weeks?

First it depends on the schema of your database.  If node table is
already clustered by node id, and the way table is clustered by way
id, it's going to be at least an order of magnitude faster.  Once
you've got the tables clustered by id, it's basically a matter of how
fast can you write to disk.  You're most likely going to be i/o bound.