Hi all, Even though it is short, I think that the draft-low-level-encapsulation would look complete enough if it had, for each described aspect: * a link to the doc (I'll add them); * some concrete benchmarks, in an "Experimental results" section, to see what would be the performance/memory impact of enabling each feature or leaving it out of the compiled PyPy. As far as I know our benchmark results are not nicely regrouped at some place, so I suggest we collect them on this mailing list. We need: * Stacklessness: what are the most up-to-date results? * Multiple Interpreters: I guess no one tried so far to compile in a mode where the 'space' variables don't go away. Let's. * Concurrency: not much data here apart from the massive unexplained overhead of enabling threads. * Memory Management: refcounting is veeery slow, which only shows that we could do much better there given sufficient efforts... * Evaluation Strategy: the thunk object space. Overhead? A bientot, Armin.