Date: Mon, 30 Oct 2006 19:59:37 +0100 From: Thierry Lacoste <th.lacoste@wanadoo.fr> To: Chuck Swiger <cswiger@mac.com> Cc: freebsd-questions@freebsd.org Subject: Re: clock running too fast Message-ID: <200610301959.38092.th.lacoste@wanadoo.fr> In-Reply-To: <4544BEB6.80606@mac.com> References: <200610291354.58097.th.lacoste@wanadoo.fr> <4544BEB6.80606@mac.com>
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Thank you. I tried TSC, ACPI-fast and i8254 but I still have the same problem. Best regards, Thierry. On Sunday 29 October 2006 15:46, Chuck Swiger wrote: > Thierry Lacoste wrote: > > On one of my servers running 6.1-RELEASE-p10 I cannot keep the clok > > synchronized using ntpd. AFAICS this is certainly because the clock > > is running way too fast (about one second per minute). > > > > After I run ntpdate then ntpd the clock is drifting and /var/db/ntp.drift > > contains 0.00. > > > > Is there a way to slow down the system clock (something like tickadj > > under some linux distributions) ? > > Take a look at "sysctl kern.timecounter", and choose another clock from the > list of choices (by setting kern.timecounter.hardware to something else in > the list of choices). > > If you are using TSC now, especially on a dual-CPU system, try using > ACPI-safe or i8254 instead. If you are using the ACPI timecounter, try > looking for a BIOS update for your hardware; perhaps that might fix the > bogus clock.
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