JOSM Memory usage with large files

[Vincent Privat]

Hello,
Can you please launch josm with "java -jar -Xmx4096M
-XX:+HeapDumpOnOutOfMemoryError josm-tested.jar" command line and share the
(compressed) resulting heap dump somewhere?
See
https://docs.oracle.com/javase/8/docs/technotes/guides/troubleshoot/clopts001.html
for details.
Cheers,
Vincent

2018-03-21 18:17 GMT+01:00 Mike N <niceman at att.net>:

> Hi, we're working on an import (long announced and documented) of
> buildings in the area - I'm working with Windows with no problem -Xmx4096M
> , and Ubuntu with no problem.   Another mapper helping with the import is
> experiencing a problem in which the JOSM / java grabs a huge amount of
> memory such as 11-15G of RAM when editing or uploading a file consisting of
> 10K - 15K nodes / 3K buildings which brings the computer to a standstill
> since the computer only has 8G of RAM.
>
>   What kinds of things could cause this problem, and what are some tips
> that might point us in the right direction?
>
>   Thanks, system info follows.
> -------------------------
>  System configuration:
>
> 8G physical RAM
> JOSM 13500
>
> Only Mapillary plugin
>
> Java 1.8.0_151
> OpenJDK Runtime Environment (build 1.8.0_151-8u151-b12-0ubuntu0.1
> 7.10.2-b12)
> OpenJDK 64-Bit Server VM (build 25.151-b12, mixed mode)
>
> Distro: POP OS https://system76.com/pop
>
>