#9361: Maxima timeout on Mac OS X 10.4 (Tiger)
------------------------+---------------------------------------------------
Reporter: kcrisman | Owner: tbd
Type: defect | Status: needs_review
Priority: critical | Milestone: sage-4.8
Component: packages | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: Jeroen Demeyer
Merged: | Dependencies:
------------------------+---------------------------------------------------
Changes (by newvalueoldvalue):
* status: new => needs_review
* author: => Jeroen Demeyer
* cc: kcrisman (added)
* priority: minor => critical
Old description:
> This has been reported on more than one Mac running OSX 10.4 Tiger.
> {{{
> >
> > ----------------------------------------------------------------------
> > The following tests failed:
> >
> > sage -t -long
> > "rro/sage-4.4.4.alpha1/devel/sage/sage/interfaces/maxima.py" #
> > Killed/crashed
> }}}
> This is due to the commands in this file which create the tab completion
> list for use with Sage's Maxima; for some reason even when done 'by hand'
> they often time out, and since they happen a few different times in this
> file it will nearly always time out (even with huge `SAGE_TIMEOUT` set).
New description:
This has been reported on more than one Mac running OSX 10.4 Tiger:
{{{
$ ./sage -t devel/sage/sage/interfaces/maxima.py
sage -t "devel/sage/sage/interfaces/maxima.py"
*** *** Error: TIMED OUT! PROCESS KILLED! *** ***
[361.3 s]
----------------------------------------------------------------------
The following tests failed:
sage -t "devel/sage/sage/interfaces/maxima.py" # Time out
Total time for all tests: 361.3 seconds
}}}
This is because on OS X 10.4, maxima takes a long time (a few seconds to a
minute) to process an interrupt. Sage only waits 2 seconds for an
interrupt and thinks that Maxima is stuck. It naively sends more
interrupts which totally lock up Maxima. The work-around is simply to
send only 1 interrupt and wait...
With the patch:
{{{
$ ./sage -t devel/sage/sage/interfaces/maxima.py
sage -t "devel/sage/sage/interfaces/maxima.py"
[129.5 s]
----------------------------------------------------------------------
All tests passed!
Total time for all tests: 130.0 seconds
}}}
--
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9361#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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