Here is an output of jstat:
jstat -gc 7285 1s 125
S0C S1C S0U S1U EC EU OC OU ...
22016.0 9216.0 0.0 9120.0 156160.0 153482.7 125952.0 31227.0 ...
13312.0 20992.0 9472.0 0.0 151040.0 2975.5 125952.0 31227.0 ...
13312.0 20992.0 9472.0 0.0 151040.0 5951.9 125952.0 31227.0 ...
As per the oracle documentation:
S0C Current survivor space 0 capacity (KB).
S1C Current survivor space 1 capacity (KB).
Isn't the capacity supposed to be fixed (i.e. S0C and S1C fields)?
Why are those fields changing with time?