Hello,
my first email to the OSM list and I hope someone had this problem
before (and solved it). I have OSM Europe data in postgres 8.4.7/postgis
1.5.2 and render tiles with mapnik0.7.1. this actually works fine, until
I apply the hourly diffs from
http://planet.openstreetmap.org/hour-replicate in a bunch once per day
with osmosis [1]. It usually takes about 4-5 hours to finish. After a
few days of updates I get errors in the rendered images. It seems to
affect only line features (roads, borders, railways) in a way that
random gaps appear [2]. I've also seen that some linenodes jumped for
several hundred kilometers [3].
I already re-imported europe.osm and its still the same after some days
of updates.
I dont necessary need the hourly diffs, I just dont want to fall months
behind with my map. So if there is no easy fix for this problem, I would
rather re-import europe.osm monthly or bi-monthly and render a new set
of tiles then. This means I would have to cache all 20 zoomlevels to be
able to provide tiles while doing the re-import, which would be a bit of
a drawback... (level 17 still rendering after 4 days. 18? 19?)
I am no postgres ace and I only tried reindexing tables and vacuum DB,
without any result. I dont even know if the problem is with osmosis or
the database setup (or other)?
will be happy about any pointers.
cheers
Daniel
[1]
osmosis --rri workingDirectory=/var/lib/pgsql/.osmosis --simc
--write-xml-change "-" |\
/opt/osm2pgsql/osm2pgsql -s -a -b "-3500000,3720000,5080000,11940000"\
--tablespace-main-data europe --tablespace-main-index europe
--tablespace-slim-data europe --tablespace-slim-index europe\
-d osm -C 4096 -S /opt/osm2pgsql/default.style -
osmosis config:
baseUrl=http://planet.openstreetmap.org/hour-replicate
maxInterval = 90000
[2]
http://kofserver3.hzg.de/error1.png
[3]
http://kofserver3.hzg.de/error2.png
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