Diego,

as has been pointed out, your problem is not that you have many objects. Try for example

col := LinkedList new.
Smalltalk garbageCollect.
MessageTally spyOn: [1000000 timesRepeat: [col add: (Link new)]]

instead. Same number of objects, much faster.

It is that you are storing so many objects in *one* big object.

Maybe if you could describe more precisely what it is you actually want to do, people could give you better advice on how to avoid this problem.

Cheers,
Joern