How to know the number of active threads in Puma

Question

I am trying to see the number of active puma threads on my server.

I can not see it through ps:

$ ps aux | grep puma
healthd   2623  0.0  1.         


        

Answer 1

Number of puma threads for each worker:

ps aux | awk '/[p]uma/{print $2}' | xargs ps -h -o nlwp

Sample output:

   7
  59
  59
  61
  59
  60
  59
  59
  59