Issue 1094 in moose-technology: List presentations should be fast on large collections

Status: New
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 1094 by [hidden email]: List presentations should be fast  
on large collections
https://code.google.com/p/moose-technology/issues/detail?id=1094

Opening a large collection using a list presentation is very slow.
The following example shows the problem.
Also when inspect just (1 to: 2000000) collect:#asString creating the Items  
tab takes time.

composite := GLMCompositePresentation new.
composite list
        showOnly: 50.
composite openOn: ((1 to: 2000000) collect:#asString)

Most of the time seems to be spend in GLMTreeMorphModel>>#roots that given  
that GLMTreeMorphModel>>#amountToFilterBy always returns nil.

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