upload dialog: typing a comment is slow due to high cpu load

[Cobra]

Typing a changeset comment is very slow, during typing a lot of cpu time is consumed.
Something must be triggered in the background.

Version: r5047

[akks]

How to reproduce it? (I can not) Does it depend on OS or OSM file?

[Cobra]

This happens when editing in densely mapped areas or large areas.
I noticed that for every character typed, a way gets unhighlighted and highlighted again (like it happens when moving the cursor over it). I did not see this every time, but every time I could see it, that lag was present.

I could figure out a way to reproduce this for me:

• download some densely mapped area
• change something
• move the cursor over a complex way (e.g. landuse=residential with many nodes) so it gets highlighted (and notice there is a slight lag doing so)
• open the upload dialog via shortkey (it will also happen when using the button, but this is unreliable)
• type fast

Monitoring cpu usage at low intervals (I've got 50ms resolution) helps to see that something is going on.

Java version: 1.6.0_30, Sun Microsystems Inc., Java HotSpot(TM) 64-Bit Server VM, ubuntu 10.10

[xeen]

I can get the CPU usage up using the way Cobra described (from 40% to 100%). No idea to what’s the cause, though.

[akks]

Each key press in upload dialog cause repaint of layer... I am debugging.

[akks]

It is not specific for upload dialog. Keypress in every dialog - add property, F12 preferences, etc. (but not in main window) leads to map repaint.

Thank you for noticing such big waste of CPU!

[Don-vip]

Do you still observe this behaviour ? I cannot reproduce with latest.

[Cobra]

Replying to Don-vip:

I cannot reproduce with latest.

Me neither. Seems like this has been fixed by now.