Não tenho certeza de qual CPU você tem
Se você estiver usando uma CPU UltraSparc T2, parece que não há escala de frequência. Talvez você possa introduzir uma carga controlada cuidadosamente ajustada até que eles façam benchmark sobre o mesmo (tipo, escreva algum código)?
A CPU também possui alguns recursos de gerenciamento de energia que podem ser úteis para ajustar o desempenho, se você puder encontrar uma maneira de usá-los:
UltraSPARC T2 implements very limited execution speculation in order to minimize overall power consumption. To further reduce power, UltraSPARC T2 transitions a thread to a not-ready state whenever a thread encounters a long latency operation. Clock power is further reduced on UltraSPARC T2 by utilizing clock gating on datapath, control, and array structures. Power throttling is supported through 3 external power throttle pins. Based on the state of the power throttle pins, stall cycles are injected into the processor core pipeline to reduce overall dynamic power consumption. In order to reduce static or leakage power, logic gates with sufficient timing, noise, and slew margins are replaced with footprint-compatible gates with longer channel length [3]. UltraSPARC T2 includes on-chip thermal diodes which enable the system to regulate the die temperature by controlling the instruction issue rate, and by disabling threads