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@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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