[OSM-talk] Serious JOSM performance degradation

[john whelan]

If you give it more memory sometimes that compensates on the CPU side by
not requiring so much disk reading and writing.  Also there are almost
certainly internal tables which work better in memory.  JAVA is a strange
world of its own and with so many contributors and plugins I'm not sure
anyone has a clear idea of exactly how JOSM works with in it.

Not guaranteed but worth a try.

Cheerio John

On 11 November 2017 at 16:03, Safwat Halaby <swiftfast at gmx.com> wrote:

> More details:
>
> JOSM 12712 has no issues.
> Latest JOSM 13053 has issues.
> Not sure how to download the intermediate version (12921).
> It's a CPU starvation issue and not a memory overuse issue. (Core at
> 100% for 10-30 seconds).
>
> Test case:
>
> Open up the attached file, try editing the ref or name of a stop.
>
> 12712 works flawlessly.
> 13053 hangs for 10-30 seconds.
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