On Thu, Apr 30, 2009 at 10:30 PM, Robert Bradshaw <rober...@math.washington.edu> wrote: > > On Apr 30, 2009, at 10:18 PM, William Stein wrote: > >> On Thu, Apr 30, 2009 at 10:13 PM, mabshoff >> <mabsh...@googlemail.com> wrote: >>> >>> >>> >>> On Apr 30, 10:06 pm, John H Palmieri <jhpalmier...@gmail.com> wrote: >>>> On Apr 30, 8:54 pm, mabshoff <mabsh...@googlemail.com> wrote: >>> >>> <SNIP> >>> >>>>> Is this reproducible? >>>> >>>> Apparently not: I've been trying to get it again, but >>>> unsuccessfully. >>> >>> Yeah, my experience is that that code is inherently racy and no one >>> has even been able to reproduce it. I don't see it on sage.math at >>> all, but I am also use a RAM disk for DOT_SAGE, so I think that has >>> something to do with it. >>> >>>> John >>> >>> It looks like we should consider merging "#5952: Worksheet >>> downloading >>> blocks the entire server" since otherwise you can trivially DOS the >>> whole server. >> >>> Maybe that option should be disabled per default for >>> now? No patch has been posted and I am not 100% sure RobertWB is >>> working on a patch. Comments? >> >> I could easily DOS any sage notebook server right now in many ways, >> which I won't list here since I don't want to give anybody any ideas. >> #5952 only stops the server *while* the directories with the >> worksheets are being tar'd up -- once that filesystem operation >> finishes, things go back to being nonblocking. > > Yes, it is easily to DOS the notebook if one tries, but I'm wary of a > big button that "accidently" does so. Taring up the directories for a > dozen worksheets can take several minutes.
That's a very good point. Over (some) NFS setups it can really take a long time indeed. > I'll try to get a patch out tonight, perhaps as a first pass it would > be good to use to the opposite of the accounts option in the notebook > () command. Yep. Thanks!! William > > - Robert > > > > > -- 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 -~----------~----~----~----~------~----~------~--~---
