[ntp:questions] Sunfire X2100 and FreeBSD

Rick Jones rick.jones2 at hp.com
Mon Jul 14 22:22:48 UTC 2008


jlevine <jlevine at boulder.nist.gov> wrote:
>    I am trying to use a Sunfire X2100 system as a time server using
> FreeBSD 6.2. The system clock steps by tens of microseconds every few
> minutes with no time software running. I have not seen this on other
> non-Sun systems with the identical version of FreeBSD. Is this a
> feature of the Sun hardware? If yes, can it be turned off? Otherwise
> the time steps will confuse the synchronization process.

IIRC the x2100 is an Opteron-based system.  Is the one you have using
dual-core Opterons?  ISTR some issues with the TSC (?) in those things
when part of the chip would slow-down, but not other parts and that it
confused things wrt time.

rick jones
-- 
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