[mkgmap-dev] [PATCH v7] make maps in parallel

Thu May 14 11:49:19 BST 2009

Hi,

Did some testing, using file: 
http://planet.openstreet.nl/planet-benelux-090513.osm.gz

Split with: java -Xmx2048m -jar splitter.jar --mapid=31303001 
--max-nodes=500000 planet-benelux-090513.osm.gz

See outputs in the four directories at: http://www.amsk.nl/osmtest/ 
(slowish host, sorry).

.../svn1035: mkgmap vanilla svn rev 1035
.../patchv7*: mkgmap 1035 + mb-parallel-maps-v7.patch + 
mb-fix-long-segments-v1.patch

The mkgmap-invocations are listed in the "cmdline" files in the 
respective directories. Output and logging are in those directories as 
well. I've removed the input-files (except in the svn1035 directory; the 
others use the same input) and the gmapsupp.img-files (too large; let me 
know if you need them).

Note especially the difference between "svn1035" and "patchv7_1thread" 
(not identical), and between "patchv7_4threads" and 
"patchv7_4threads.run2" (exact same inputs and commandline, different 
output).

Hope this helps. If you need any other info/testing, let me know.

Regards,
Martin