Aggresive Mode Sweeper

Hello everyone, I want to share my experience about the problem with the f5 BIG IP LTM serie2000 that often appears in the logs

event is Aggressive mode sweeper: /Common/default-eviction-policy (6d) (global memory) 19622 Connections killed,

is it fatal because it often appears in event logs?

and how to deal with that problem?

Please share your experience, thank you