Check CPU info at AIX

# pmcycles -m
Cpu 0 runs at 1500 MHz
Cpu 1 runs at 1500 MHz
Cpu 2 runs at 1500 MHz
Cpu 3 runs at 1500 MHz

# sar -u -P ALL 1 2

AIX erprp1 3 5 00C9565E4C00 02/03/06

System configuration: lcpu=4