[mkgmap-dev] [PATCH]mkgmap performance

Mon Dec 26 16:34:33 GMT 2011

Thanks Gerd!

I have test it once and the patched mkgmap was 25% faster than r2147. I 
think common cases will not give such a big performance boost but the 
result is: it's faster (no matter how much) :-) Therefor I have commited 
the patch.

How did you measure the reduced heap memory? I only know the method to 
reduce the -Xmx parameter until java throws an OutOfMemoryExeption. But 
that's a very tedious method.

WanMil

> Hello list,
>
> attached is a small patch that improves mkgmap throughput.
> It uses the String.intern() method only in those places where tag info is
> read from input files.
> During my tests, this reduced(!) needed heap memory and made the program ~
> 5-10% faster.
>
> http://gis.638310.n2.nabble.com/file/n7108665/addtag_intern.patch
> addtag_intern.patch
>
>
> ciao,
> Gerd
>
>
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