[Routing] How to load OsmBinDataSet dataset to memory and reuse it during next sessions

[Oleg Demchenko]

Dear Marcus.
Thank you for your response.

I've created H2 database and loading data from there. Performance is much
better.

Marcus I'm using currently binary traveling salesman.jar with version
1.0.3-RC1
How to download  latest sources and build a project on my side?
I see via http
http://travelingsales.svn.sourceforge.net/viewvc/travelingsales/trunk/traveling_salesman/,

but can't upload using my SVN repobrowser for windows.

I would like to debug method TurnRestrictedMultiTargetDijkstraRouter route
method on my database.




2010/8/27 Marcus Wolschon <Marcus at wolschon.biz>

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> Am 27.08.2010 19:50, schrieb Oleg Demchenko:
>
> > Dear all.
> >
> > I've imported country OSM file to OSM Binary format and more or
> > less successfully finding a route using travelingsalesman class
> > and osmbin as dataset. Performance is much faster than with XML
> > (OSM file), but there are still some points for improvement.
>
> OsmBin is outdated and replaced by H2DataSet.
>
> > Well, each time when program call method like .getNearestNode(),
> > I'm getting exception (warning)
> >
> > /org.openstreetmap.osm.data.osmbin.FixedRecordFile <init> INFO:
> > Memory-maping the file failed in
> > org.openstreetmap.osm.data.osmbin.IDIndex File - using
> > conventional io instead/
> >
>
> That is okay and means that your file is larger then the Address-Range
> you supply on
> the Java-Command-Line for Memory-Mapped IO. So the file cannot be
> mapped into memory
> and is accessed using conventional IO.
> That is about 10x slower for such random access then memory mapped IO.
> Thus the strong warnings.
>
> The recommed command-line for Sun Java is:
> *java -XX:MaxDirectMemorySize=512M -jar traveling_salesman.jar*
>
> (Documented in travelingsales.sourceforge.net under
> "using Traveling Salesman"
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-- 
All the best
               Oleg Demchenko
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