It seems to me that updates in that parameters are not respected until flying passenger restart
passenger_max_instances 3;
passenger_min_instances 0;
- from nginx config, in server section. Nginx reloaded.
Then made request to app.
<min_processes>1</min_processes>
<max_processes>2</max_processes>
The output from rvmsudo passenger-status --show=xml
Using Flying Passenger 5.0.30.