I think it's the pexpect problem that manifests itself on Linux
kernels shipped with Ubuntu and Debian, but
not with RHEL.
We had a discussion about this here a while ago.
(Just in case, I also tried this test on a very fast Debian system,
and saw same slowness...)

(you might see that CPU isn't very active during this run --- that's a
sure sign of it).

Dima

On Apr 19, 12:42 am, Jeroen Demeyer <[email protected]> wrote:
> On 2011-04-18 18:18, Jeroen Demeyer wrote:
>
> > Hello all,
>
> > For all those whose installed sage-4.7.alpha2 or later (on a reasonably
> > fast machine): please provide the timing of
>
> > $ ./sage -t -long "devel/sage/sage/sandpiles/sandpile.py"
>
> > On sage.math.washington.edu:
> > Total time for all tests: 23.7 seconds
>
> > But on my laptop (Gentoo Linux, Intel Core 2 Duo 2.00 GHz, gcc 4.4.3):
> > Total time for all tests: 519.9 seconds
>
> Some data points from the buildbot from sage-4.7.alpha4:
>
> * Ubuntu 10-64 (redhawk): 1349.2 s
> * Fedora 14-64 (eno): 192.4 s
> * RHEL 5.3-64 (cleo): 79.5 s
> * RHEL 5.5-64 (rosemary): 27.0 s
> * OpenSolaris 06.2009-32 (hawk): 65.0 s
> * OSX 10.6-32 (bsd): 101.3 s
>
> Note that redhawk is completely out of proportion, this is otherwise a
> very fast machine.

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