#15367: Empty lists while creating parents
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Reporter: roed | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-5.13
Component: memleak | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by SimonKing):
To test whether the dimension of the dicts is too big at initialisation,
it makes sense to see how often a resize of `MonoDict` and `TripleDict`
happens.
First findings:
- During startup of Sage, there is no resize of a `MonoDict`. There is
exactly one `TripleDict` that is resized, and it is actually resized three
times.
- The size of a `MonoDict` or `TripleDict` is always (by automatic resize)
''smaller'' than the number of buckets. The first resize of the
`TripleDict` mentioned above happens when it has 53 buckets but 38 items
(and after resize, it has thus 107 buckets for 38 items!)
I will now see what happens during doctests.
Question: Is it really a good idea to have 107 buckets for 38 items?
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Ticket URL: <http://trac.sagemath.org/ticket/15367#comment:7>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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