id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
19116	Memory leaks	skyper	skyper	"I always did forget to report it. So, this is the start. I gonna try to collect more information.

Working for hours on a session I noticed JOSM to use more memory than it was given with `-Xmx`.
* After closing JOSM  there is much more memory freed than JOSM was allowed to use.
* I got a ""Out of memory"" warning uploading these days.
 * Saving the session and restarting did allow me to upload using only half of the assigned memory. Sadly, I did not save the session.

So far I suspect these different regions to look at:
* validator, as I run it quite often, see #17184.
* imagery cache
* relation editor, seems to use quite a lot of memory, especially, opening 10 or more at once."	defect	closed	normal		Core		needinfo