[mkgmap-dev] Memory limits for mkgmap and splitter

Wed Jul 1 18:11:34 BST 2009

2009/7/1 Lambertus <osm at na1400.info>:
> Just to get some figures to talk about: On an 8 core machine with 8 gb ram
> it takes about 4 hours to split North/South America en about 1 hour to split
> the rest of the world. The pre-splitting of the planet into those two large
> sections is done using Osmosis in my case.
>
> So using a 10x processing time the splitting process still could be
> considered 'workable', but 20 to 100x processing time is not usable in
> production environments where weekly updates are applied. Getting some more
> RAM into your machine might be the easiest solution as long as the
> chipset/bios allows it (some cheap AMD chipsets/motherboards allow even 16GB
> ram). Ram is cheap these days.
>

My notebook (Thinkpad T500) is already maxed out.  The only help would
be replacing 2x2GB with 2x4GB and that is not cheap, it would mean
additional 50% of the original notebook price, otherwise I would
already be done.  Buying additional PC for splitter and mkgmap only is
not the thing I am willing to do.

I have just found some examples of the "tie" functionality for java:
http://www.arachna.com/roller/spidaman/date/20060208

Paul

-- 
Don't take life too seriously; you will never get out of it alive.
                                        -- Elbert Hubbard