RE: Why HZ on i386 is 100 ?

Davide Libenzi
2002-04-17T00:54:54Z

On Tue, 16 Apr 2002, Chen, Kenneth W wrote:

> If you change HZ to 1000, you need to change PROC_CHANGE_PENALTY
> accordingly. Otherwise, process would get preempted before its time slice
> gets expired. The net effect is more context switch than necessary, which
> could explain the 10% difference.

that might be the case. i was not running the latsched sampler during that
test, that would have helped me in detecting extra task bounces/cs

- Davide