IIRC in the latest Cython release there was a bugfix that reduced the
access time for all cython non-cdef classes [1]. Given the amount of
time that is spent on function calls I wouldn't be surprised if that
change propagated to a general speedup in the doctests.

Cheers
J

[1] 
http://groups.google.com/group/sage-devel/browse_thread/thread/c97d36d23131f4c5/783574a2911c4be2?


On 25 oct, 08:55, "Dr. David Kirkby" <david.kir...@onetel.net> wrote:
> On 10/25/10 08:35 AM, koffie wrote:
>
> > Are you testing all doctest (ie also the long ones) since it could be
> > that some long doctests have been tagged as such in an update.
>
> > Then there is ofcourse still the possibility that there was a merge
> > off a ticket which improves general sage performance.
>
> > The recently proposed regresion testing package would have been
> > usefull right now :).
>
> > Kind regards,
> > Maarten Derickx
>
> Yes,
>
> I always run 'make ptestlong' but have noticed the testing time has fallen 
> from
> around 1800 s to around 1600 s.
>
> My OpenSolaris machine is a buildbot slave. If you look at the test time for 
> the
> latest buildbot
>
> http://build.sagemath.org/sage/builders/hawk%20full/builds/8/steps/sh...
>
> it is 1566 seconds. Yet I once tested Sage 100 times in a loop, and know it 
> was
> taking around 1800 s to test then. I think its dropped by around 200 seconds,
> though I can't precisely pin down when the change occurred.
>
> It would be useful if we could collect some statistics on the time to run the
> tests on certain hardware, though of course we need to look at CPU time, not
> wall time, as the latter will change with system load. But I know my system 
> was
> idle(ish) when tests were taking 1800 s.
>
> I always tend to have VirtualBox running, which does eat up a bit of CPU time,
> but I have that running now and still the tests are taking 200 s less at least
> some previous versions of Sage
>
> Dave

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