[mkgmap-dev] RAM and mdr Europa ?

Fri Mar 24 18:18:49 GMT 2017

Hi Thomas,
since you have 10 GB of RAM for all of the tasks running on your 
computer, I doubt that 9800 MB for Java/mkgmap is actually feasable. 
With Win 7, I put away some 1200-1500 MB for the operating system.
If a process gets more memory, swapping to disk will occur, which is a 
slow process, and the garbage collection might fail in such situations 
(well, not sure for Java, but I saw such situations with .Net).
I do not know how much RAM will be used up by WIN 10, but I think 
replacing "/-Xmx9800m/" by "/-Xmx8500m/" could be worth a test; you 
could also (additionally) set the initial heap size to that amount 
("/-Xms8500m/") .
Bernhard

Am 24.03.2017 um 17:07 schrieb Thomas Morgenstern:
>
> Hi, I have a W10, 64 bit machine  and 10 GB RAM. Since  a few months i 
> can not generate the mdr-file for Europa from 
> www.Download.Geofabrik.de In a first run i generate only all the 
> maptiles. No Problem. in a second i will generate the overview, tdb 
> and mdr. I start j/ava -Xmx9800m -XX:-UseGCOverheadLimit jar 
> mkgmap.jar code-page=1252 -family-id=1901 -x-split-name-index -index 
> D:\Karten\Europa\*.img./
>
> and get the error.
>
> with mkgmap-r3864 it get the same error.
>
> How many RAM must i have for Europa complete ?. In august 2016 it was 
> possible to create the mdr with 6 GB RAM. But the filesize is growm ...
>
> thomas
>
>
>
>

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