cvs commit: src/sys/kern subr_param.c

Oliver Fromme olli at
Fri May 9 09:56:16 UTC 2008

Pawel Jakub Dawidek wrote:
 > On Fri, May 09, 2008 at 11:08:20AM +0200, Oliver Fromme wrote:
 > > Pawel Jakub Dawidek wrote:
 > >  >   Modified files:
 > >  >     sys/kern             subr_param.c=20
 > >  >   Log:
 > >  >   - Export HZ value via kern.hz sysctl (this is the same name as for the
 > >  >     loader tunable).
 > > 
 > > It's probably just me, but I don't see the usefulness of
 > > this.  The HZ value is already exported via kern.clockrate.
 > > (I'm not saying the change is wrong, I'm just looking for
 > > an explanation.)
 > The reason for this change was that I was trying to recall what is
 > the name of the tunable and I wasn't able to find it with simple
 > "sysctl -a | grep hz". In an ideal world most of not all loader
 > tunables should also be visible as read-only sysctls.

Hm.  It was my understanding that the loader tunables
are already exported via kenv(2), so typing "kenv"
should include them all.  I was probably wrong, though.

Thanks for the explanation.  It's now clearer to me.

Best regards

Oliver Fromme, Bunsenstr. 13, 81735 Muenchen, Germany

``We are all but compressed light'' (Albert Einstein)

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