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

New issue 1094 by chisvasi...@gmail.com: 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.