cluster threads using 50% of CPU

Hello,

Our environment consist of a loadbalancer and two Hybris servers (App1 and App2) configured in clustered mode connecting to common database server. At any given time java process is utilizing 50% of CPU load irrespective of any external load.

When we run top command in thread mode(SHIFT+H) there are 2 threads utilizing 25% of CPU load each. This threads are of cluster property.

There is no issue in cluster configuration. When cluster mode is set to FALSE the CPU utilization drops to 1%. Is this behavior normal or is there any issue in cluster environment??