[mkgmap-dev] splitter improvements

Wed Nov 14 10:02:03 GMT 2012

Hi,

in case you have trouble with reproducing the problem, there is java option
-XX:-HeapDumpOnOutOfMemoryError. Uli can run splitter with this option and
then send you produced hprof file which you can open in MemoryAnalyzer or
jhat. There you will see all allocated objects, what takes most memory and
in case of memory leaks what keeps objects in memory.

On Tue, Nov 13, 2012 at 6:51 PM, Gerd Petermann <
gpetermann_muenchen at hotmail.com> wrote:

>  Hi,
>
> I want to reproduce the problem, but I don't see a file with 1.9GB at this
> place: http://140.78.94.22/osm/
>
> Where am I wrong?
> Gerd
>
> ------------------------------
> Date: Tue, 13 Nov 2012 18:15:43 +0100
> From: ulibaer at gmail.com
> To: mkgmap-dev at lists.mkgmap.org.uk
> Subject: [mkgmap-dev] splitter improvements
>
>
> I think the memory requirements are more dependent on the data than on the
> splitter version:
> I have a self created data set consisting of germany + ~50 kilometers plus
> the data from iceland cut with osmconvert.exe from the europe.osm.pbf from
> geofabrik, which is processed without errors with versions 225, 229, 230
> and 231 using 32-Bit-jvm with Xmx1376m. When i use the about the same sized
> 1.9 GB "germany+"-dataset from here: ( http://140.78.94.22/osm/ ) i can't
> get thru the data without java heap overflow, even with 64-Bit-jvm given
> Xmx3000m. I think there is some kind of endless loop or the like, which
> causes the algorithm to overflow the memory in some circumstances.
>
> Anyway, good work until now! I'm eager to test further splitter versions
> don't requiring the giant overlap-values for routing.
>
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