Python: How to get number of mili seconds per jiffy

Question

I\'d like to know the HZ of the system, i.e. how many mili seconds is one jiffy from Python code.

Answer 1

sysconf(SC_CLK_TCK) does not give the frequency of the timer interrupts in Linux. It gives the frequency of jiffies which is visible to userspace in things like the counters in various directories in /proc

The actual frequency is hidden from userspace, deliberately. Indeed, some systems use dynamic ticks or "tickless" systems, so there aren't really any at all.

All the userspace interfaces use the value from SC_CLK_TCK, which as far as I can see is always 100 under Linux.