On Tue, Feb 7, 2012 at 10:51 AM, Jason Grout
<[email protected]> wrote:
> On 2/7/12 12:17 PM, Brad Burkman wrote:
>>
>> I'm having a new and serious problem using Sage online.
>>
>> When I click "evaluate," it pauses for a second and I get the green
>> bar, but then no output.
>>
>> Really basic stuff like 2+3, but also plot( x, (0,1)).  No output.
>>
>> I'm having the same trouble at the shodor server and at sagenb.org,
>> with IE9, Firefox, and Chrome, on different computers running Windows
>> and Ubuntu, on my school's faculty wireless, student wireless,
>> hard-wired connection, and the wireless at the library next door
>> (different internet connection).
>>
>> I'm having no trouble using a local copy of Sage.
>>
>> I updated my Java (Iced Tea).  No effect.
>>
>> Suggestions?  I'm trying to use Sage with my Precalculus class.
>
>
> I saw this too about an hour or two ago.  I restarted sagenb.org and the
> problem went away.  Have you tried in the last hour or so?

This sounds like the symptom we get when there are a very large number
of users,  hence processes, and the system isn't allowed to start
anymore (e.g., can't allocate pseudotty's).   Jason -- did you do
anything before the restart to check on this, e.g, "./admin --status"
or "ps -u sagenbws |wc -l"?

William

>
> Thanks,
>
> Jason
>
>
>
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-- 
William Stein
Professor of Mathematics
University of Washington
http://wstein.org

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