[ntp:questions] NTP and the Intel Atom

Kasper Pedersen ngfilter at kasperkp.dk
Mon May 25 16:20:58 UTC 2009


Steve Kostecke wrote:
> Can anyone report on NTP performance on Intel Atom based systems (such
> as http://supermicro.com/products/chassis/1U/502/SC502L-200.cfm)?
> 

n1.taur.dk is a D945GCLF(v1) board with bios 133 (? one release newer than 122)
running i686 Linux (F10). The earlier bioses for this board are bad (SMM handler is
badly broken).
refclock is an OCXO disciplined by DCF receivers with a time constant of ~2 days.
The environment is work's server rack; Thermally quiet water cooled room with ~3C
variation over a day.

Loopstats:
http://n1.taur.dk/clock/mlo.png

A few other close servers as seen by n1.taur.dk:
http://n1.taur.dk/clock/peerhires.png
The current offset comes from me removing the radios for two days (it drifted about 400us).

It performs well enough, I think.

/Kasper




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