Instance Performance

orlando_f · ‎07-30-2014

Hi Guru's,

Does anyone know what the performance capabilities are of a ServiceNow instance? i.e. How many concurrent users can login, log tickets at any given time? Is there any information out there regarding this

Valor1 · ‎08-04-2014

What every ServiceNow production instance gets:

Two UI Nodes (all figures below are per node)
2GB RAM for each node
Sixteen User semaphores available on each node (total of 32 concurrent transactions, or 32 people hitting the "Submit" button all at the exact same moment)
Eight additional integration / SOAP semaphores (per node, total of 16), to ensure that user-land transactions are not impacted by integration and ODBC traffic.
Eight background schedulers for (16 total) email processing, scheduled jobs, workflow timers, Discovery, etc.
Thirty-two DB connections (64 total)

I believe I worked on the same project as mguy and that customer had double the above stats.

In other words, you are fine with the default settings unless you are in the top 5% of ServiceNow customers, size-wise. The default setup will handle probably 8k+ process (IT) users and 200,000+ end users.

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Pradeep Sharma · ‎07-30-2014

Hi Orlando Fortes

I am not sure if this info documented anywhere.

However you can refer to below wiki link in case of any issues with the slow performance of the instance.

http://wiki.servicenow.com/index.php?title=Troubleshooting_Performance

Thanks,

Pradeep Sharma

orlando_f · ‎07-30-2014

Thanks for the response, I checked this article and there is no information recorded there.

Subhajit1 · ‎07-31-2014

Hi Orlando,

Theoretically there is no limit on the number of Users that can concurrently log in to the system but it is limited by the number of Semaphores that are running on individual nodes of the instance. If there is heavy User traffic on the Instance, it is always recommendable to turn off auto refresh of Homepages.

Hope this helps.

Thanks,

Subhajit

marcguy · ‎07-31-2014

This is something ServiceNow will work with you on, to ensure you have the correctly sized instance, once they know how many licences you have, expected load, no of tickets, intergrations etc. There are many ways to control instance load, more nodes, worker nodes, multiple DBs, those are normally only needed for Enterprise installations though. FYI, I've aware of 16k concurrent process users supporting 450k end users logging 12k incidents, 1k changes a day without issues, you just need to make sure your sized correctly obviously