#20686: Optimize method lookup from the categories for instances of Cython
classes
---------------------------+----------------------------
Reporter: nthiery | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-7.3
Component: categories | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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For instances of Cython classes, the inheritance from categories is
emulated by a manual lookup in
`sage.structure.element.Element.__getattr__`. This lookup is about 10
times slower than a normal method lookup::
{{{
sage: def foo(self): return
sage: Sets().element_class.foo = foo
sage: def g(x):
....: for i in range(1000):
....: x.foo()
sage: x = Semigroups().example().an_element()
sage: %timeit g(x)
10000 loops, best of 3: 115 µs per loop
sage: x = 1
sage: %timeit g(x)
1000 loops, best of 3: 1.18 ms per loop
}}}
So there should be room for optimization (or using a different
approach for emulating this inheritance).
First step: profiling ...
--
Ticket URL: <http://trac.sagemath.org/ticket/20686>
Sage <http://www.sagemath.org>
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