MongoDB: ReplicaSet slower than a corresponding Master/Slave config
- by SecondThought
Is it true that a mongoDB configured as a replicaset (lets say two nodes + an arbiter) will always be slower than the same DB and server specs but configured as a Master?
I've run some tests and found out that for a fresh DB, RS is a little quicker than Master/Slave config but when the DB is getting bigger than ~100k records the latter is getting much snappier.
am I missing something here?
PS: I was testing it with mongoid driver for ruby.