[PATCH] out of memory

[RAytoun]

I am regularly getting the following error and it is preventing me from working on the Nepal Earthquake
Tasks.
"JOSM is out of memory. Strange things may happen.
Please restart JOSM with the -xXmx###M option where ### is the number of MB assigned to JOSM (eg 256)
Currently 247MB are available to JOSM"

Where do I find this -xXmx###M option to assign more memory to JOSM?

I am on Windows 7 and JOSM Version 8279.

[Don-vip]

Please don't create bug reports for that. Adding more memory to JOSM is explained on several sites: this one, the osm wiki, the osm help forum, etc.

[skyper]

See How to run on WikiStart

[wiktorn]

I've noticed, that we are leaking BufferedImages, I've noticed more than 2000 BufferedImage instances, though we should have at most 200 (what should reside in memory tile cache).

I will look more deep into this using Memory Analyzer Tool.

[stoecker]

A note: Please don't open old tickets only because the topic seems equal :-)

[wiktorn]

The topic gained my attention, as I've seen yesterday also the same message. I did some preliminary digging with VisualVM. But as I worked with MAT, I confirmed, that the problem lies only in size of memory cache.

With 200 objects in cache, I see memory usage ~100MB after System.gc(), which is quite reasonable.

1000 might be far to high default.

Replying to stoecker:

A note: Please don't open old tickets only because the topic seems equal :-)

In my opinion, this gives users a better felling of support from developers.

[Don-vip]

In 8327/josm:

fix #11386 - reduce cache memory footprint (patch by wiktorn)

[Klumbumbus]

Ticket #11406 has been marked as a duplicate of this ticket.

[bastiK]

High memory use has been reported for r8339 on the forum: ​http://forum.openstreetmap.org/viewtopic.php?pid=502326#p502326

He sees more than 1 GB memory used by JOSM according to the Windows task manager.

@wiktorn: Can you check if this is reproduceable?