Hi Steve, I think Arndt is right, mkgmap requires much more heap now when computing the index, also without the new --x-split-name-index option. This is his error message: Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded at java.nio.CharBuffer.wrap(Unknown Source) at java.nio.CharBuffer.wrap(Unknown Source) at uk.me.parabola.imgfmt.app.srt.Sort.createSortKey(Sort.java:182) at uk.me.parabola.imgfmt.app.srt.Sort.createSortKey(Sort.java:271) at uk.me.parabola.imgfmt.app.mdr.Mdr7.preWriteImpl(Mdr7.java:168) at uk.me.parabola.imgfmt.app.mdr.MdrSection.preWrite(MdrSection.java:129) at uk.me.parabola.imgfmt.app.mdr.MDRFile.writeSections(MDRFile.java:308) at uk.me.parabola.imgfmt.app.mdr.MDRFile.write(MDRFile.java:247) at uk.me.parabola.mkgmap.combiners.MdrBuilder.onFinishForDevice(MdrBuilder.java:355) at uk.me.parabola.mkgmap.combiners.GmapsuppBuilder.onFinish(GmapsuppBuilder.java:163) at uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:575) at uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReader.java:128) at uk.me.parabola.mkgmap.main.Main.mainStart(Main.java:134) at uk.me.parabola.mkgmap.main.Main.main(Main.java:105) I see two reasons: 1) The structure MDR7Record is a bit larger 2) A lot more bytes are stored in byte[] arrays and SrtSortKey instances For a map for Austria this requires 169MB instead of 128 MB. I think one reason is that Mdr7.preWriteImpl() is always computing and saving a partial name, no matter what option is used? Gerd Date: Sun, 22 Feb 2015 01:12:25 +0100 From: arndt@speichenkarte.de To: mkgmap-dev@lists.mkgmap.org.uk Subject: [mkgmap-dev] computing power mdx/mdr Hello @all my PC is not he best machine. 4GB RAM & Intel CoreDuo 3GHz 64bit Win7. Making maps from Europa is no problem, but at the end of the process, mkgmap failed to build mdx/mdr. For the website www.speichenkarte.de i need germany and a few kilometers more. Size of the files after "splitter" is 2,8 Gb and 213 img-files. mkgmap 3426 is to be able to build this. mkgmap 3472 failed to build mdx/mdr. Also the gmapsupp dosn´t work/no shown. Need 3472 needs more computing power than 3426? Is it possible change mkgmap, to create mdr/mdx and gmapsupp wiss less cumputer power? Best regards Arndt P.S. Sorry for the bad english, hope you understand what i mean :) _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev