Hi Guys,
It's always good to hear from you.

we just Moved to Rails3 and we started to see Heavy Load on our Primary Mongo Server.
We run in Replica set of 3 Server, while one of them is hidden so bottom line 2 Servers are available for Read.

Our mongoid.yml is configured as follow:

production:
sessions:
default:
hosts:

• 10.180.132.192:27017
• 10.180.137.129:27017
  database: mydb
  read: :secondary

Is there a reason Why we experience such a load on our primary while our Secondary is Chilling out at the beach?

thank you for you support,
Adi.