On Aug 31, 2009, at 1:32 PM, Alex Clemesha wrote: > On Mon, Aug 31, 2009 at 8:59 AM, William Stein<wst...@gmail.com> > wrote: >> >> >> On Mon, Aug 31, 2009 at 8:45 AM, Thierry Dumont <tdum...@math.univ- >> lyon1.fr> >> wrote: >>> >>> William Stein a écrit : >>>> >>>> The first thing I plan to do is consider switching from >>>> twisted to Django, as is done in codenode -- see http:// >>>> codenode.org/ -- >>>> hopefully, even sharing code with that project. >>> >>> Django is used (generally) with mod_python under Apache. Does it >>> means >>> that the whole Sage will be served by Apache and mod_python? This >>> would >>> (may be) improve performances, no ? >>> >> >> I doubt it would impact performance in practice. Improving >> performance is >> going to require improvement to the rest of the server code. >> >> For Sage, the default would be that the notebook is still served >> by some >> Python library -- most likely Twisted of course -- but that at >> least the >> option of replacing use of Twisted by Apache would exist. >> >> Codenode guys -- since I speak from 0 experience (!) -- any >> comments on the >> relative performance of Apache versus Twisted? > > For what we are trying to do, i.e. write an "online programming > notebook" (Sage notebook / Codenode), > the bottleneck is definitely going to be the processes that are > actually executing > the code, the communications from these processes back to the > "Frontend", > and the additional data operations like saving user state. > > Consider a "very small" load on a regular website, maybe 100 users > at once doing > various things like reading static articles or checking out photos. In > the case of > the Sage Notebook or Codenode, that's *100 python/sage processes* - > Apache vs Twisted doesn't make much of a difference here.
Though we're all just pulling numbers out of the air until we have actual benchmark data, I agree with you that performance probably isn't a big issue here. I see the advantages o Apache being that authentication, ssl, etc. are abstracted away and often already integrated into the existing environment which is one less thing to worry about. That being said, I'm a strong proponent of the benefits of WSGI. - Robert --~--~---------~--~----~------------~-------~--~----~ To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
