[mkgmap-dev] Performance hints for Java JRE 9 + 10

Wed May 16 15:05:50 BST 2018

Hi Gerd,
What about if you compile mkgmap with java 9 or higher - and run it on Java
8 - this also applies or not? Or asked differently - is this dependant on
the compilation system or on the executing system?

Felix

On 16 May 2018 at 15:53, Gerd Petermann <GPetermann_muenchen at hotmail.com>
wrote:

> Hi all,
>
> it seems that the new Garbage Collector (G1GC) that was introduced with
> Java JRE 9 causes longer run times for splitter and mkgmap.
> I've played with some options and found that the use of
> -XX:+AggressiveHeap seems to be a good idea when you use these newer JREs.
>
> Without this option the java programs tend to allocate more memory and
> thus the OS might start to swap.
>
> Gerd
>
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>

-- 
Felix Hartman - Openmtbmap.org & VeloMap.org
Schusterbergweg 32/8
6020 Innsbruck
Austria - Österreich
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