cvs commit: src/sys/kern kern_mutex.c

[Bruce Evans]

On Thu, 7 Jun 2007, Bruce Evans wrote:

> (Cold client):
>      834.39 real      1300.21 user       192.19 sys
>   1323006  voluntary context switches
>   1526348  involuntary context switches
> ...
> This is with 4BSD, no PREEMPTION, and pagezero disabled.  With the
> ...
> The next run will have pagezero resetting its priority when this priority
> gets clobbered.

That gave only mainly more voluntary context switches (13.5+ million instead
of the best observed value of 1.3+ million or the value of 2.9+ million
without priority resetting.  It reduced the pagezero time from 30 seconds to
24.  It didn't change the real time significantly.

Bruce