#4731: Repeated computation involving Maxima is getting slower and slower
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Reporter: SimonKing | Owner: mabshoff
Type: defect | Status: new
Priority: major | Milestone: sage-4.1.1
Component: performance | Keywords: maxima timing repeated computation
Reviewer: | Author:
Merged: |
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Comment(by SimonKing):
At http://groups.google.com/group/sage-
devel/browse_thread/thread/863e59ba164590c5 Golam Mortuza Hossain came up
with a still much shorter code snipped that is probably related with this
ticket:
{{{
sage: f(x) = function('f',x);
sage: timeit('bool( f(x) == 0 )')
5 loops, best of 3: 71.6 ms per loop
sage: timeit('bool( f(x) == 0 )')
5 loops, best of 3: 89.1 ms per loop
sage: timeit('bool( f(x) == 0 )')
5 loops, best of 3: 101 ms per loop
sage: timeit('bool( f(x) == 0 )')
5 loops, best of 3: 127 ms per loop
sage: timeit('bool( f(x) == 0 )')
5 loops, best of 3: 159 ms per loop
sage: timeit('bool( f(x) == 0 )')
5 loops, best of 3: 231 ms per loop
sage: timeit('bool( f(x) == 0 )')
5 loops, best of 3: 305 ms per loop
}}}
So, this code should be short enough to clearly point to the source of
trouble. Maxima experts, speak up, please!
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4731#comment:2>
Sage <http://sagemath.org/>
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