[mkgmap-dev] Error in memory calculation

Wed Feb 5 13:05:52 GMT 2020

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