[mkgmap-dev] Performace mkgmap-3803

Wed Feb 15 08:47:59 GMT 2017

Hi Ticker,

the performance problem with that special style is in ShapeMergeFilter.
I think the reason is that the new code in MapSplitter etc. puts a lot more shapes into one sub div, esp. at low resolutions, and ShapeMergeFilter
doesn't work well in that case as it starts to do lots of seq. seaches.
I'll try to find a better solution for that.

Gerd
________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Ticker Berkin <rwb-mkgmap at jagit.co.uk>
Gesendet: Dienstag, 14. Februar 2017 19:00:06
An: mkgmap-dev at lists.mkgmap.org.uk
Betreff: Re: [mkgmap-dev] Performace mkgmap-3803

Hi Gerd

Yes - use the patch

Still not sure why there is a change in performance here though.

Ticker

On Tue, 2017-02-14 at 17:44 +0000, Gerd Petermann wrote:
> Hi Arndt,
>
> your style is very special because it adds all polygons with
> resolution 10. I assume that this is the
> reason for this because other style did not show a change in
> performance.
> @Ticker: Maybe we can use the patch from this thread ?
> http://gis.19327.n8.nabble.com/Minimum-resolution-in-polygons-style-t
> c5887899.html#a5888060
>
> Gerd
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> von Arndt Röhrig <arndt at speichenkarte.de>
> Gesendet: Dienstag, 14. Februar 2017 18:27:00
> An: Development list for mkgmap
> Betreff: Re: [mkgmap-dev] Performace mkgmap-3803
>
> Hi Gerd,
>
> i build 12 tiles. 3804 needs 11 minutes for that, 3796 only 5
> minutes.
>
> The style is not the default. Its the style from my
> "speichenkarte.de"
>
> Arndt
>
> Gerd Petermann <GPetermann_muenchen at hotmail.com> hat am 14. Februar
> 2017 um 17:38 geschrieben:
>
> Hi Arndt,
>
> if you use the default style please try r3804.
>
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> von Arndt Röhrig <arndt at speichenkarte.de>
> Gesendet: Dienstag, 14. Februar 2017 17:33:42
> An: Development list for mkgmap
> Betreff: [mkgmap-dev] Performace mkgmap-3803
>
> Hello @all,
>
> mkgmap-3803 needs for 1 map-tile 2-3 minutes. mkgmap-3796 (or older)
> needs only 15-30 seconds.
>
> My PC is an older model.
>
> IntelCore2 Duo 3GHz 6GB RAM 64bit win10
>
> mkgmap starts with this:
>
> "java" -jar -Xmx3300M -enableassertions -jar
> ..\..\mkgmap\mkgmap\mkgmap.jar
>
> Can i anything do?
>
> (Buy a faster PC :))
>
> greets
>
> Arndt
>
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