2009/3/31 kcrisman <kcris...@gmail.com>: > > >> 1. what VM you are using? > > VMWare. The virtual machine itself gotten with the Sage download is > some version of Ubuntu, apparently Feisty Fawn? > > (Parenthetical note: Unfortunately, the Ubuntu webpage says: Ubuntu > 7.04 Feisty Fawn Release Date April 19 2007 End of life date October > 2008. This has caused some trouble for us, rather notably that one has > to do a hack to allow an older, compatible version of Octave to be apt- > gotten and used inside Sage. Our sysadmin suspects this is also at > the root of problems we have had with IE (e.g. not just IE6, but IE7) > and interacts since about the new year.) > >> 2. How much physical memory you give to the VM? virtual cpus? > > Under the Hardware tab > ○ Memory should be set to 1024MB > >> 3. Do you add swap inside the VM? How much? > > None that I know of. > >> 4. What's the ulimit you use for the notebook? > > ulimit='-v 500000' > >> 5. Who are your users? > > Students mostly, probably no more than 5-10 at a time, but depending > on the semester could get heavy at times. We crashed miserably trying > 20 new accounts at once with only a half-gig of memory, haven't tried > large-scale tests since - but it seems to hang a bit once more than 5 > or so are on it at once, depending. Swap space might help this too, > but I haven't asked for this to be tried yet.
>From my experience I would say this is 100% due to lack of memory. You really need much more than 1GB RAM and 0GB swap to support 20-30 users at once. William --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
