Jeremy Parrish wrote: > Greetings, > > We just bought 7 new servers from SuperMicro, and they all have the same > problem. They all gain about 1 second every 10 seconds or so (10% too > fast). I have tried various versions of Linux kernels (in particular, > 2.4.27, 2.6.15, 2.6.15-smp, 2.6.16.20...) with all kinds of kernel > options (noapic, acpi=off, clock=tsc, the list goes on...). There is no > noticeable difference between any of those. > > The servers use the Intel E7230 chipset and have Pentium D 805 > processors. Ntpd does not seem to correct the clock at all (I've let it > run for more than a day). I've tried installing adjtimex, and it adjusts > the rate of the clock by about -3000 seconds per day, but I would > something more accurate. > > Is there a way I can make ntpd play nice with such a horrible drift? > > Thanks in advance, > > Jeremy > > It is probably some sort of "dynamic over clocking" implemented by the manufacturer. Taker a good look at the bios settings and turn off anything that sound like it dynamically messes with the clock speeds and any spread spectrum options.
John _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
