Re: How long is a hz?

On Monday 28 January 2008, Sean Bruno wrote:
I couldn't quite find the definition for "hz" in sys/ this morning.
What is it's value and where is it defined?

sys/kern/subr_param.c:int hz;
sys/sys/time.h: int hz; /* clock frequency */

sys/kernel.h:extern int tick; /* usec per tick (1000000 / hz) */
sys/kernel.h:extern int hz; /* system clock's frequency */

The actual value for hz comes from your kernel configuration. The default
is "options HZ=1000" at the moment.

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