[Etoys] Questions questions

[Yoshiki Ohshima]

  Hi, Luke,

> Finally I've found a performance-degradation problem with
> Morph>>duplicate that I haven't figured out how to reproduce from a
> fresh image. In one of my images Morph>>duplicate is spending lots of
> time (600ms on a fast machine) searching for a unique name in the
> series Sketch1/Sketch2/etc. It seems to be rejecting thousands of
> names that have actually fallen out of use (their morphs have been
> garbage collected). In this image I've found the following dubious
> change helpful in PasteUpMorph>>uniqueNameForReferenceFor:
> 
> old: ((self referencePool includesKey: nameSym) not and:
> new: (((self referencePool at: nameSym ifAbsent: nil) isNil) and:
> 
> because many names are present as keys in the referencePool with value
> nil. I'm not sure if this is the right thing or how I ended up with so
> many names in use.

  I don't know why you have thousands of them there, but please update
your image at least to 1755, and go to the problematic project, and
evaluate:

  ActiveWorld cleanUpReferences

this would remove the references to objects that are already garbage
collected.

-- Yoshiki