roman$ sysctl kern.clockrate
kern.clockrate: tick = 1000, tickadj = 4, hz = 1000, profhz = 1000, 
stathz = 1000

Does anyone know the mystery behind "sysctl kern.clockrate" values, i.e. 
what they do and how they affect performance/responsiveness of the 
system? I've been searching on Goolge etc, but could not find anything 
useful. I've been changing "tick" and "hz" by recompiling kernel, and 
for some values kernel panics, for some values the system runs quite 
slow, for some values it seems to run a bit faster, however I couldn't 
find anything conclusive :-\