On Sat, Nov 20, 2010 at 12:07 PM, Jeroen Demeyer <jdeme...@cage.ugent.be> wrote:
> I think somebody should seriously look into www.sagenb.org.  It is so
> slow that it is essentially unusable.  Unfortunately, it is also very
> bad advertising for Sage, because for many people their first contact
> with Sage might be www.sagenb.org.  I've actually been directing my
> students to alpha.sagenb.org, but of course that is not a good solution.
>
> Somebody who knows the notebook might be able to understand why it is so
> slow.  The problem is not the machine, because the load is not high and
> other notebooks on the same server are much faster.  So it is truly an
> implementation problem.

Hi,

To solve this slowness problem will require probably at least a month
of focused work to completely reimplement basically from scratch the
storage and server architecture of the notebook in a much more
scalable way.    Nobody is working on this, though if nobody else does
it, then I'll do it sometime in the next year.   So the options are:

(1) I simply totally disable www.sagenb.org,
(2) I leave things as they are.
(3) Somebody reimplements the notebook in a way that scales.

Writing scalable web applications is not easy.  It's possible, but it
requires much different techniques than are used for the current
notebook, e.g., one must have multiple server instances, and all data
has to be stored in a database that can accessed from any server, etc.



 -- William

>
> Jeroen.
>
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-- 
William Stein
Professor of Mathematics
University of Washington
http://wstein.org

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