#14711: Weak references in the coercion graph
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Reporter: jpflori | Owner: davidloeffler
Type: defect | Status: needs_review
Priority: critical | Milestone: sage-5.13
Component: number fields | Resolution:
Keywords: memleak, number | Merged in:
field, QuadraticField | Reviewers:
Authors: Simon King | Work issues:
Report Upstream: N/A | Commit:
Branch: | 23f18f23c38b104364ba499b4d4db8683480b895
u/SimonKing/ticket/14711 | Stopgaps:
Dependencies: |
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Comment (by SimonKing):
FWIW, I have merged the current master branch into the branch from here. I
had to resolve some merge conflicts. So, I hope I did right.
Replying to [comment:138 darij]:
> Any info what exactly slowed down the tableaux classes?
I did not state (in comment:107) that tableaux classes became slower. All
what I stated was: If you run the complete doc tests of Sage, then you
will find that more parent creations occur with the branch than with
vanilla Sage---and the tableaux classes show the largest relative
increase.
I don't even state that this is bad. Apparently there are doctests that
would in vanilla Sage re-use tableaux that have been created in other
doctests. This branch fixes a leak. Hence, some tableaux are garbage
collected between doctests.
'''IF''' the tableaux developers believe that tablaux should be more
strongly cached, then they should properly implement a stronger cache,
rather than relying on the memory leak that is fixed in this ticket.
--
Ticket URL: <http://trac.sagemath.org/ticket/14711#comment:140>
Sage <http://www.sagemath.org>
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