#14711: Memleak when creating QuadraticField
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Reporter: jpflori | Owner:
Type: defect | davidloeffler
Priority: critical | Status: new
Component: number fields | Milestone: sage-5.12
Keywords: memleak, number field, | Resolution:
QuadraticField | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by SimonKing):
Unfortunately, this easy change is not enough. I still get
{{{
sage: Q = QuadraticField(-3)
sage: import gc
sage: gc.collect()
524
sage: C = Q.__class__.__base__
sage: len([x for x in gc.get_objects() if isinstance(x, C)])
3
sage: del Q
sage: gc.collect()
0
sage: len([x for x in gc.get_objects() if isinstance(x, C)])
3
sage: Q = QuadraticField(-5)
sage: len([x for x in gc.get_objects() if isinstance(x, C)])
4
sage: del Q
sage: gc.collect()
398
sage: len([x for x in gc.get_objects() if isinstance(x, C)])
4
}}}
But if I recall correctly, there is further strong caching done for number
fields.
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Ticket URL: <http://trac.sagemath.org/ticket/14711#comment:14>
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