calcru: runtime went backwards, RELENG_6, SMP

[Matthew Dillon]

:Well, I can of course shut the kernel up, but kernel time stability is still my 
:concern. I run ntpd there and while sometimes it seems stable (well, sorta: 
:drift are within several seconds...) there are cases of half-a-minute time 
:steps. 
:
:Sincerely,
:D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]

    I think the only hope you have of getting the issue addressed is to
    run FreeBSD current.  If you can reproduce the time slips under current
    the developers should be able to track the problem down and fix it.  The
    code is so different between those two releases that they are going to
    have a hard time working the problem in FreeBSD-6.

    If you don't want to do that, try forcing the timer to use the 8254
    and see if that helps.  You may also have to reduce the system tick
    to ~100-200 hz.

					-Matt
					Matthew Dillon 
					<dillon at backplane.com>