[josm-dev] [PATCH] Lower memory consumption using string interning in OsmReader

[Jiri Klement]

Hi,

Attached is very simple patch which reduce josm memory usage.

I've made some memory benchmarks using attached patch and also earlier
timestamp and tagged patch. Here are the results:

no patch 251MB
string inter patch 224MB, 27MB saved
tagged patch 223MB, 1MB saved
timestamp patch 185MB, 38MB saved

Especially the timestamp patch saves much more memory than I have expected.

The tests were made using 80MB osm file. I've used jconsole to perform
GC and measure heap size.

--
Jiri Klement
-------------- next part --------------
A non-text attachment was scrubbed...
Name: string_intern.patch
Type: application/octet-stream
Size: 1321 bytes
Desc: not available
URL: <http://lists.openstreetmap.org/pipermail/josm-dev/attachments/20090314/509869ba/attachment.obj>