current production environment

Hi Gary, you can look at your latest Appian Health Check run to see your average logins per hour and your CPU utilization on the dashboard tab. You can use that information to extrapolate the increase in CPU with your increase in user load to determine if you have the available hardware. This will be a quick sanity check.

Alternatively, a more definitive would be to run a performance test in a environment with the same hardware as production which simulated user load. You could run a health check afterwards with a time period of the day of the performance test. The numbers for CPU and memory on the health check would tell you if you would be able to handle that user load.

I would recommend an application performance testing plan - forum.appian.com/.../Performance_and_Load_Testing.html
Every application and environment has it's own performance profile, and it's possible to simulate projected user loads using performance testing tools. I'd be happy to discuss more if you're interested.

Adding another useful link for hardware sizing - forum.appian.com/.../Sizing_Hardware_For_Appian.html