[Building Sakai] Maximum simultaneous users

[Matthew Jones]

We're running across a 5 node cluster though, where each node only takes on
1/5 of the users. Putting all 9K users all on 1 system could cause
connection unresponsiveness if existing tomcat connections were still busy
when new requests came in, and couldn't complete fast enough to handle new
requests. There also are issues with database pool exhaustion which can be
improved by having multiple nodes.

There's no limit in Sakai for sure, but tomcat has limits, as does a
database, and you need to cluster both of these (or run it on faster
hardware with higher limits) to handle more users.

On Fri, Aug 19, 2011 at 12:15 PM, Sean DeMonner <demonner at umich.edu> wrote:

> I'm not aware of any hard limit. We routinely run with 10,000+ concurrent
> users in Production. The error you've mentioned sounds more like a malformed
> request from your load testing software (missing or bad site ID, for
> example).
>
> SMD.
>
>
>
> On Aug 19, 2011, at 9:40 AM, Claudia Roberta wrote:
>
> Hi guys,
>
> The Sakai has simultaneous user limit?
>
> We conducted a test with 9,000 concurrent users and the following error
> message was displayed:
> *“The site you requested is not available.” *
>
> Tks,
>
> Claudia _______________________________________________
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> ====================================================
> Sean DeMonner, Director, Teaching & Learning, ITS
> 3350 Duderstadt Center, University of Michigan, (734) 615-9765
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