[view := ROMondrianViewBuilder new.

view shape label fontSize: [:x | x ].

view nodes: (10 to: 100).

view open] timeToRun  

On my MacBookPro i7 2.6 GHz this takes 23s.

The actual reason is that LogicalFont>>widthOfString: looks up the real font when the font is not yet cached. And this ends up looking for files on the disk.

I do not know an easy way out, but as it is, we cannot use font scaling essentially. And because of that, visualizations like Annotation Constellation are not practicable anymore:

http://www.themoosebook.org/book/externals/visualizations/annotation-constellation

Cheers,

Doru

"Every thing has its own flow"