[mkgmap-dev] Error in memory calculation

Wed Feb 5 20:16:39 GMT 2020

Hi Gerd

i'm not sure what you are looking for. In my build environment i'm using
java 1.8.0_241 (64 bit) and as my laptop have 32 Gb of memory availiable
my command line to build is like this :

java -Xmx30000m -XX:-UseGCOverheadLimit -ea -jar
-Dlog.config=logging.properties "c:\Program Files
(x86)\KartenTools\mkgmap\mkgmap.jar"  ....

and depending on which map i want to build, the occupied memory runs up
nearly to 30Gb

Am 05.02.2020 um 14:05 schrieb Ticker Berkin:
> Hi Gerd
>
> I don't have a 64bit environment or that much memory. In my normal
> environment, I get:
>
> $ java -Xms1500M -Xmx1540M -jar ../mkgmap.trunk/mkgmap.jar \
>    dummy.osm dummy.osm dummy.osm
> Time started: Wed Feb 05 12:56:28 GMT 2020
> Setting max-jobs to 4
> Number of MapFailedExceptions: 0
> Number of ExitExceptions: 0
> Time finished: Wed Feb 05 12:56:29 GMT 2020
> Total time taken: 1 second
>
> -Xmx1540M is the maximum value that allows Java to start up on my
> machine.
>
> With a newer version I loaded in October, but it didn't have any
> obvious advantages:
>
> $ /opt/jre1.8.0_231/bin/java -Xms1500M -Xmx1540M \
>    -jar ../mkgmap.trunk/mkgmap.jar \
>    dummy.osm dummy.osm dummy.osm
> Time started: Wed Feb 05 12:58:29 GMT 2020
> Setting max-jobs to 4
> Number of MapFailedExceptions: 0
> Number of ExitExceptions: 0
> Time finished: Wed Feb 05 12:58:30 GMT 2020
> Total time taken: 1 second
>
> Ticker
>
> On Fri, 2020-01-31 at 16:15 +0000, Gerd Petermann wrote:
>> please try this command with openjdk 11 or 13 64Bit:
>> java -Xms4G -Xmx10G -jar mkgmap.jar f:\osm\dummy.osm f:\osm\dummy.osm
>> f:\osm\dummy.osm
>> This is what I get:
>> Time started: Fri Jan 31 17:12:53 CET 2020
>> Setting max-jobs to 1
>> Number of MapFailedExceptions: 0
>> To reduce the run time, consider increasing the amnount of memory
>> available for use by mkgmap by using the Java -Xmx flag to set the
>> memory to more than 41000 MB, providing this is less than the amount
>> of physical memory installed.
>> Number of ExitExceptions: 0
>> Time finished: Fri Jan 31 17:12:54 CET 2020
>> Total time taken: 1 second
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> mkgmap-dev at lists.mkgmap.org.uk
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      Viele Grüße und 73 de Manfred Haiduk, DD8KQ
      e-mail mhaiduk at t-online.de dd8kq at gmx.de

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