[OSM-talk] Serious JOSM performance degradation

[mmd]

Am 11.11.2017 um 22:25 schrieb Safwat Halaby:
> Apparently one of my messages did not get through due to a huge file.
> Here it is once more:
> 
> 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.
> 

I can reproduce this locally on JOSM 13106. According to jvisualvm cpu
profiling (on Oracle JDK), most time is spent in method
org.openstreetmap.josm.data.tagging.ac.AutoCompletionSet.add.

Best bet would be to create an issue on
https://josm.openstreetmap.de/newticket


--