EAP stress testting

Hello, I want to do a stress test of my Freeradius setup with EAP connections. radclient tool support arguments that allow to send many packets/request per second, but eapol_test tool does not support it. So to simulate may EAP connections/request per second I am starting many eapol_test processes in parallel. It kinda works, but I wonder if there is a better tool to do that. -- Vladimir