Converting CPU clock values to wall time

Hi,

As far as I understand, pretty much all time values reported by HAL and Mesa cards are CPU clock counts instead of actual time (e.g.: thread time, thread max-time, hm2 *.tmax params, ...).

To convert these values to milli-seconds, I use the TSC tick rate calculated by the kernel, which can be extracted with:

For example, if the param read.tmax from my Mesa 7i96 is 300'000, the value in ms would be 300 * 1000 / tsc_khz.

Is this the correct way to do it?

I'm not sure of your intent here. Where are you doing this? For what purpose?
If you are writing a component the global variable fperiod will contain the time in seconds for that particular servo cycle.

My goal here is simply to make sense of the *.tmax values from my Mesa card, to check how much headroom I have for the servo thread rate.

Nice! Didn't know about that feature.