On Wed, Feb 8, 2017 at 10:36 AM, Erik Bray <erik.m.b...@gmail.com> wrote:
> On Tue, Feb 7, 2017 at 6:49 PM, Jeroen Demeyer <jdeme...@cage.ugent.be> wrote:
>> On 2017-02-07 17:30, Erik Bray wrote:
>>>
>>> A problem I've been having lately when running Sage's test suite on
>>> Cygwin (i.e. sage -t -a).
>>>
>>> Several of the tests that use Maxima are spinning up Maxima processes
>>> (I guess interacted with via pexpect?) and not killing them.
>>
>>
>> This is probably Cygwin-specific. It would help if you could give some more
>> details. For example: is the problem reproducible or does it only happen
>> sometimes? Do you know which files cause the problem? Do the doctests
>> actually pass? Does Cygwin have something like strace which might help to
>> debug this?
>
> Yes, almost certainly Cygwin-specific.  Though I'm not sure when it
> started--this didn't happen when I was running the tests a few months
> ago.
>
> It's reproducible insofar as every time I run the full test suite it
> happens.  I haven't pinpointed any specific tests that cause the
> problem--that's mainly what I was asking for help with. I.e. what are
> some tests that use Maxima?

To answer this question for myself--as the discussion on what Maxima
is used for in Sage pointed me in the right direction--the
sage/calculus tests reliably start up at least 3 maxima processes,
which then run away with my CPU even after the those tests are
finished.  I'll see if I can see what exactly they are doing.

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