On Jan 13, 11:28 pm, "ma...@mendelu.cz" <ma...@mendelu.cz> wrote:

Hi Robert,

> Thank you for all your answers. I will upgrade my hardware
>
> > 512MB is very very piddly for a server.
>
> Yes. I thought that this could be enough, because another my server,
> Mathematical Assistant on Web 
> (http://user.mendelu.cz/marik/maw/index.php?lang=en&form=derivace
> ) runs pretty well with much smaller memory 
> (http://wood.mendelu.cz/math/phpsysinfo/index.php?disp=dynamic)
> Now you, Jason, Michael and Robert helped me to find the source of the
> problems and I will try to solve it. Many thanks to all again.

Your server calls Maxima and without taking a closer look it is
unclear to me if you start a Maxima process per user or not. Overall
Maxima is lighter than Sage primarily because it is all common lisp
and does not use any external libraries per default, which is one of
the reasons Sage's memory footprint is larger than Maxima's. OTOH
Maxima is missing a lot of he functionality that Sage provides, but
the price we pay for that is a larger footprint. So if you were to use
Sage "just" as a tool to do calculus (which is mostly handled by
Maxima at the moment) we cannot be less large than Maxima by itself :)

Maybe in the long term we can make all the notebooks share one Sage
process, but I think that will be rather messy and potentially slow
for anything but non-trivial things.

> Robert Marik

Cheers,

Michael
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