Just continuing this notebook thread... Yesterday I setup this server as a brand new notebook server instance: http://480.sagenb.org/. It's running on exactly the same VMware virtual machine as sagenb.org (so 8GB RAM and two virtual processers). It's literally the *same* machine, not just a copy of it. I then had over 30 students in a big lab of 100% Windows PC's simultaneously all create accounts on the 480.sagenb.org and then all at once *use* 480.sagenb.org to do arithmetic, plotting, linear algebra worksheets, etc. Amazingly everything worked fine, the server didn't crash or even seem to slow down noticeably. I noticed that some of the students used Internet Explorer and weren't dead in the water (though I told them to use Firefox). One of the main questions they had was whether the web version of Sage was crippled compared to the local version, and when I told them it wasn't they were happy -- I guess students are often used to crippled web versions of local apps.
Anyway, I was actually very surprised that the sage notebook server could stand up to this load. --William 2009/3/29 Dan Drake <dr...@kaist.edu>: > On Sun, 29 Mar 2009 at 12:55PM -0300, Gonzalo Tornaria wrote: >> For those of you running notebook servers in "production", inside a >> VM, here are some questions about configuration. I'm particularly >> interested in sagenb.org. > > For the two servers at sagenb.kaist.ac.kr: > >> 1. what VM you are using? > > VirtualBox 2.0.4 in Ubuntu 8.10. The host machine is a Core 2 Quad. > >> 2. How much physical memory you give to the VM? virtual cpus? > > VB only does 1 CPU per VM right now; both VMs have a gigabyte of memory. > >> 3. Do you add swap inside the VM? How much? > > No swap on either VM. > >> 4. What's the ulimit you use for the notebook? > > The options are "-v 500000 -f 100000 -u 100" > >> 5. Who are your users? > > Er, mostly me, at the moment. I keep hoping to market Sage more > aggressively here, but haven't really done it yet, for various reasons. > > Dan > > -- > --- Dan Drake <dr...@kaist.edu> > ----- KAIST Department of Mathematical Sciences > ------- http://mathsci.kaist.ac.kr/~drake > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (GNU/Linux) > > iEYEARECAAYFAknQKUYACgkQr4V8SljC5LrKqACfWez7GUEQ0UitG6hiZkCVZE8Y > JzEAn34gT/juhjDTfX2Z8keISi59tJu1 > =v36L > -----END PGP SIGNATURE----- > > -- William Stein Associate Professor of Mathematics University of Washington http://wstein.org --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send 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 -~----------~----~----~----~------~----~------~--~---
