Hi,

Looking around at issues such as #122 and #123, I see that in both cases, what is collected is the current (i.e. instantaneous) state of the CPUs, either hardware (cpufreq_* counters) or software (scaling_*_freq).

However, if compiled as such, the kernel does provide cummulative statistics via the stats/ subdirectory - see https://www.kernel.org/doc/html/latest/cpu-freq/cpufreq-stats.html.

I think the time_in_state is the most interesting, followed by total_trans. These would allow much better fidelity of historical CPU state.

Thoughts?