#4639: bad memory leak with exponentiation
------------------------------+---------------------------------------------
Reporter: bober | Owner: somebody
Type: defect | Status: new
Priority: blocker | Milestone: sage-3.2.2
Component: basic arithmetic | Resolution:
Keywords: |
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Comment (by SimonKing):
Another data point.
I took the example from #4683 (Michael, it was argued that #4683 is a
duplicate).
{{{
sage: get_memory_usage()
704.5390625
sage: v = [CDF(i)^2 for n in range(50000)]
sage: get_memory_usage()
803.67578125
...
sage: get_memory_usage()
1093.203125
sage: del v
sage: get_memory_usage()
1093.203125
sage: v = [CDF(i)^2 for n in range(50000)]
sage: get_memory_usage()
1183.86328125
sage: del v
sage: get_memory_usage()
1183.86328125
sage: v=1
sage: get_memory_usage()
1183.86328125
...
sage: v = [CDF(i)^2 for n in range(50000)]
sage: get_memory_usage()
1279.55078125
sage: w = deepcopy(v)
sage: get_memory_usage()
1295.18359375
sage: del w
sage: get_memory_usage()
1295.18359375
}}}
Therefore it seems to me that the problem is not exponentiation but a
failure in deallocation.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4639#comment:27>
Sage <http://sagemath.org/>
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