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[mkgmap-dev] Memory limits for mkgmap and splitter

From Apollinaris Schoell aschoell at gmail.com on Tue Aug 4 18:25:41 BST 2009

this works perfect, I have used it to get all relations into the split  
total split is very slow because each run extracts 4 tiles only. but  
compute time is cheap :)
  your improvements will be a big step forward

On Aug 4, 2009, at 10:06 AM, Chris Miller wrote:

>> Crap, this means I'll have to split North America into two sections
>> using Osmosis. At ground level this means broken routing between the
>> sections and that some cities/villages will be divided into two...
> I think you may have misunderstood me here. You can run the splitter  
> against
> as big an osm file as you like, and the areas.list file that it  
> generates
> should still be correct. The problem doesn't happen until the second  
> stage
> of the split.
> So to be perfectly clear, I think if you do the following you should  
> be OK:
> 1) run the splitter against all of North America (or whatever). Once  
> the
> areas.list file has been generated, hit Ctrl+C to kill the splitter.
> 2) create two (or more) files by hand, areas1.list and areas2.list,  
> each
> with less than 256 areas in them. Together these contain all the  
> areas from
> areas.list.
> 3) run the splitter again, giving it areas1.list as input. This  
> should create
> osm files for just the areas in that areas1.list file.
> 4) run the splitter again, this time with areas2.list as a  
> parameter. This
> should create the remaining osm files.
> I haven't tried this myself and it's possible you'll run into some  
> hurdles
> along the way though off the top of my head I can't think of any. If  
> you
> do hit a problem please let me know and I'll see if I can create a  
> fix so
> you can manually work around the 255 area limitation using the above  
> steps
> until I have something more robust in place.
> Chris
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> mkgmap-dev at lists.mkgmap.org.uk
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