@MichelDiz My cluster with one zero and three alphas (3 machines, one machine with one alpha).
I used top -H -p PID to show current machine already have a high system load. One alpha will start about 138 threads to serve our clients(java client or go client or http client …).
So , my means one machine with one alpha already have a high system load. If I follow you one machine with three alphas, three machines with nine alphas, will not cause a higher system load?