[GraphHopper] New version 0.2 questions

[Maxime Guyon]

Thank you for your answer Peter.

After generation there are two generated file with a name something like
 "tmpLatitude" and "tmpLongitude" with size of about 150MB each.
They seem to be temporary file used for graph generation. I removed these
files and rooting continue working.
Can I safely do that for each other graph?

Regards.


2013/11/21 Peter K <peathal at yahoo.de>

>  Hi Max,
>
> the settings in config.properties is obviously only for the creation of
> the graph. As on Android you only have 32MB ...
>
> If you look in the Android code you see the call graphhopper.forMobile()
> which calls setMemoryMapped() which is equivalent to MMAP_STORE in the
> config.properties
>
> BTW: MMAP_STORE_SYNC is a bit slower and only necessary if you want to use
> the MMAP option for the server to guarantee read-thread safety
>
>
> > Maybe I need to increase memory JVM with* -Xmx... *option for pass the
> lack of memory heap at graph generation step ?
>
> If you increase it it should work. e.g. via
>
> export JAVA_OPTS="-Xmx..."; ./graphhopper.sh ...
>
>
> Regards,
> Peter.
>
>
>  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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