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Because of the Intel Turbo Boost technology, I can’t trust the CPU frequency written on the chip. I want to get the real CPU frequency while system running. I searched that cpufreq device could help. But dev.cpu.n.freq turned out only support for dev.cpu.0.freq.
There are no other OID like dev.cpu.1.freq or dev.cpu.n.freq.
Is there any useful tool could see the CPU frequency immediately?
Regarding the absence of the
dev.cpu.N.freqsysctl for N>0, look at the BUGS section ofcpufreq(4):This is why only CPU 0 is reported.