timerfd

Linux, timerfd accuracy

I have a system that needs at least 10 mseconds of accuracy for timers. I went for timerfd as it suits me perfectly, but found that even for times up to 15 milliseconds it is not accurate at all, either that or I don't understand how it works. The times I have measured were up to 21 mseconds on a 10 mseconds timer. I have put together...