[GraphHopper] New version 0.2 questions

Maxime Guyon gmaxi17 at gmail.com
Thu Nov 21 10:42:58 UTC 2013


Hello,

I tested the new version 0.2 on my Android device.
So I was forced to generate new graph because of the new version of node
(V2)

I want to understand the difference between the two following option in
config file:

*# graph.dataaccess=MMAP_STORE_SYNC*
*graph.dataaccess=RAM_STORE*

I tested to generate *France* graph (which is big) with
*graph.dataaccess=RAM_STORE* but the process stoped because of lack of
memory heap...

So i change this property to *graph.dataaccess=MMAP_STORE_SYNC* and the
process finished correctly and the graph works and my Android device. The
time for generate was approximatly 50minutes (I7 dual core and SSD) for
information.

So I want to know if this option only impact graph generation and not
impact runtime execution?
If there is runtime impact (speed or something else) can I use
*graph.dataaccess=RAM_STORE
*for android with big graph like the one for France?

Maybe I need to increase memory JVM with* -Xmx... *option for pass the lack
of memory heap at graph generation step ?

Otherwise good Job, GPS exact routing is perffect :)
Waiting for perfect thing with turn restriction ;)

Regards.

Max
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