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[mkgmap-dev] Performance of POI search on the Device

From Franco Bez franco.bez at web.de on Wed Jun 10 12:57:59 BST 2020

Hi Gerd,

I did a little more testing.

Is it possible that the presence of a complete address is the trigger ?

I tried building maps with the Places POIS for  cities, towns and villages.

It didn't help at all, search for POI is still slow.

When I put the POIs for the fuell stations, the search is fast.

The only difference, safe the type of course, is that the fuell stations
usually have a complete postal address attched, while the city centers
do not.

Here's a sample for the map with the city POIS:



Am 06.06.20 um 14:46 schrieb Gerd Petermann:
> Hi Franco,
> one of my other ideas was a semi-transparent map where the transparent flag is set but the 0x4b polygon is still added to the map.
> Made no difference.
> Gerd
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Franco Bez <franco.bez at web.de>
> Gesendet: Samstag, 6. Juni 2020 10:39
> An: mkgmap-dev at lists.mkgmap.org.uk
> Betreff: Re: [mkgmap-dev] Performance of POI search on the Device
> Hi Gerd,
> I tried out my old Oregon 550 and my ZUMO 396
> The Oregon 550 behaves almost identical to the Oregon 750t. The boundary
> layer slows down the POI search by factor 10.
> Round about 1 sec without and 9 sec with the boundary layer.
> If I put all transparent layers on the SD Card it's 50 sec. I assume the
> biggest impact comes fron my contourlines layer with DEM Data for all of
> Europe (3,7GB size).
> The Zumo seems to be faster. The boundary layer is no big problem (maybe
> 1 sec penalty). But when I put my contourlines layer on the Zumo it
> slows down extremely.
> The GARMIN Firmware bug seems to affect several devices, if not all.
> Ciao,
> Franco
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> mkgmap-dev at lists.mkgmap.org.uk
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