Optimizing phusion passenger

I have seen on one or two arvados installs performance hits on components being served by phusion passenger. Does anyone have recommendations for performance tuning the app server?

Hi @medcelerate!

This like might be helpful link https://www.phusionpassenger.com/library/config/nginx/optimization/

If you are I/O bound on the database, increasing the pool size will increase the number of requests in flight.