Hi all, not sure what happened the last time when I measured performance, probably another program installed updates or the NTFS files were still compressed in background :-( Maybe it was the change to build 152. Anyway, I cannot reproduce the poor performance with zipped hgt files, in fact I see times which are a slightly faster now compared to uncompressed files. So, as long as java heap is not a bottleneck there is probably no reason to avoid zipped files. I tried 4035, 4038 and 4040 and found nearly the same run times with zipped files. Please let me know if you see different results for your work loads. Gerd ________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Andrzej Popowski <popej@poczta.onet.pl> Gesendet: Dienstag, 9. Januar 2018 00:04:07 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] Performance with zipped hgt files Hi Gerd, I can confirm, that mkgmap has no memory problems with DEM for big tiles. I can compile map without limiting tile sizes. -- Best regards, Andrzej _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev