#14585: Make lazy_format and lazy_string faster
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Reporter: SimonKing | Owner: robertwb
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.4
Component: coercion | Resolution:
Keywords: | Merged in:
Authors: Simon King | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/SimonKing/Make_lazy_format_faster| 75796e94a5742aff992e56d058717dd2e94a97bf
Dependencies: | Stopgaps:
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Comment (by SimonKing):
With the current branch, I get
{{{
sage: from sage.misc.lazy_string import lazy_string, _LazyString
sage: f=lambda :"hi"
sage: s=_LazyString(f,(), {})
sage: %timeit str(s)
The slowest run took 21.90 times longer than the fastest. This could mean
that an intermediate result is being cached
1000000 loops, best of 3: 827 ns per loop
}}}
With the change that Nils suggested in comment:29, I get
{{{
sage: from sage.misc.lazy_string import lazy_string, _LazyString
sage: f=lambda :"hi"
sage: s=_LazyString(f,(), {})
sage: %timeit str(s)
The slowest run took 11.15 times longer than the fastest. This could mean
that an intermediate result is being cached
1000000 loops, best of 3: 535 ns per loop
}}}
Pushing the change...
--
Ticket URL: <http://trac.sagemath.org/ticket/14585#comment:39>
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