#15498: Memory leak in ideal arithmetic
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Reporter: ppurka | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.1
Component: algebra | Resolution:
Keywords: memory leak | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by SimonKing):
Note the following variation:
{{{
sage: while R.ideal(1):
....: count += 1
....: if (count%1000 == 0):
....: _ = gc.collect()
....: print get_memory_usage(p), len(gc.get_objects())-l
....: p = get_memory_usage()
....:
10.03515625 378
0.0 378
0.0 378
0.0 373
0.0 373
0.0 373
0.0 373
0.0 373
0.0 373
...
}}}
So, we need to ''compare'' ideals to see the leak. It is not enough to
just ''create'' the ideals and then just test if they are nonzero.
By the way, I just noticed:
{{{
sage: R.ideal(1)!=1
False
sage: R.ideal(1)==1
False
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/15498#comment:5>
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