[OSM-talk] Profiling the server (was: OGL, OSM, NASA)

Immanuel Scholz immanuel.scholz at gmx.de
Tue Apr 25 15:28:40 BST 2006


>> For JOSM, I can say that the time it takes to import
>> the XML data just doesn't matter. Its under one
>> second and compared to the very inperformant internal
>> data storage done by Java its just not relevant.
> You need under one second to import planet.osm ?

No. I said the XML parsing part is below one second ;-)

I converted planet.osm to an planet.csv and loaded it with
String.split and it still used all my memory, blowed my
swap partition to pieces and laughed about java's silly
little garbage collector.

So I decided XML is not the problem. ;-)

JOSM is just not made for bigger datasets. As example the
undo feature usually copies all data objects changed,
sometimes even several times...

>> There are other reasons instead of speed for why
>> I use Java and not, say, python. ;-)
> Choosing Java for speed ? Give me a break ;)

Uhm.. did I said I choose Java because of speed? I thought
I said I choose it not because of speed, but because of
other reasons (as example: "I want to improve my Java
skills" or "I like eclipse")

Ciao, Imi.

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