You are correct. That is the intent of the MaxTenuringThreshold parameter.
Setting the value > 1 keeps objects in survivor space longer, if there is
space to keep them. The intent of keeping objects in survivor space for
longer than one ParNew cycle is to prevent relatively short lived objects
from
As Cassandra default-XX:MaxTenuringThreshold=1, which means:
first time YGC, Eden's live object copy to Survivor(S0), those survivor
object's age counter=1.
Then next time YGC, Eden live object and S0 will copy to S1. and those still
live object from S0 age counter=2 which large than MaxTenuringT
