If what you want is to allow run-time selection of `hz' from the same
   set of values that the NTP code currently supports for `HZ', why
   don't you add it?  But that wasn't, as far as I could tell, what
   you were asking.

And yet...

   Arguing that ``shifts are cheap'' seems, to me,
   an indication that you haven't examined the code well enough
   to understand how it works.

Or that you (intentionally?) filled in a blank in a silly fashion,
assuming that I didn't know what I was talking about, rather than
asking for clarification.

Hell; I've even implemented what I suggested, before I suggested it.
I even read the (long-winded) paper first so I knew what it was trying
to do.  And tested it with the simulator to be sure.

Get a grip.