On 6/16/05, Arlen Nascimento <arlen.nascimento@xxxxxxxxx> wrote: > How can I measure 1 second into kernel? I assume you mean "in the" not "into"? Measuring "into" is a bit tricker, I think. If you want to measure 1 second in the kernel, the first question is why? 1 second is a *long* time. > Does one jiffie really corresponds to 1/100 seconds?? is it right? It depends on HZ. And ACTHZ. A jiffy is defined to be 1/HZ seconds in duration, sort of. Really, the kernel requests HZ to the hardware and gets ACTHZ, which you'll notice is actually less than the request. Thus, you get rounding compensation in functions like sys_nanosleep() where 2 jiffies (or 2 milliseconds) are added to each request in 2.6. What exactly are you trying to do? Thanks, Nish -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
