[LON-CAPA-users] limited number of concurrent users during midterm

[Gerd Kortemeyer]

Hi,

On Mar 4, 2014, at 10:16 AM, Balagopal Pillai <Balagopal.Pillai at Dal.Ca> wrote:
> 
>          Here is the information -
> 
> PerlSetVar     lonLoadLim      2.00
> PerlSetVar     lonUserLoadLim      0
> 
> 
>          This capa installation is a stand alone configuration.   Is it necessary to modify lonLoadLim for unlimited connections? 

No, “zero” means unlimited, so that’s fine.

Seems like you hit the load limit ceiling, and the nice round 200 was just a coincidence.


> 
> Here are the hosts.tab and dns_hosts.tab -
> 
> lonmathstat1:mathstatdal:library:capa:http:mathstat.dal.ca

This would explain why students are directed to “http://capa”

The third-to-last entry needs to be the *full* hostname of the machine,

capa.mathstat.dal.ca

- there is no associated search path.

I would suggest to fix both files to

lonmathstat1:mathstatdal:library:capa.mathstat.dal.ca:http:dal.ca

and restart all services.

To prevent load problems in the future, either add machines to your isolated cluster or increase the lonLoadLim … depending on how many cores that machine has, you can set this higher - recommended would be “2 per core”, i.e., a four-core machine should sustain lonLoadLim 8.00 (again, changes require restarting services).

- Gerd.