Date: Fri, 12 Feb 2010 13:29:47 +0100 From: Torfinn Ingolfsen <torfinn.ingolfsen@broadpark.no> To: freebsd-stable@freebsd.org Subject: Re: ntpd struggling to keep up - how to fix? Message-ID: <20100212132947.eb2af3d0.torfinn.ingolfsen@broadpark.no> In-Reply-To: <20100211192515.GB13854@icarus.home.lan> References: <20100211190652.6a66c618.torfinn.ingolfsen@broadpark.no> <20100211192515.GB13854@icarus.home.lan>
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On Thu, 11 Feb 2010 11:25:15 -0800 Jeremy Chadwick <freebsd@jdc.parodius.com> wrote: > > Your machine has a rapidly drifting clock, usually an indicator of a > hardware problem (crystal gone bad is a common one -- seen this at work > quite a few times), or possibly a bad time counter source chosen by the > kernel. Can you please provide the output of: > > sysctl kern.timecounter Here it is: root@kg-f2# sysctl kern.timecounter kern.timecounter.tick: 1 kern.timecounter.choice: TSC(-100) HPET(900) ACPI-safe(850) i8254(0) dummy(-1000000) kern.timecounter.hardware: HPET kern.timecounter.stepwarnings: 0 kern.timecounter.tc.i8254.mask: 65535 kern.timecounter.tc.i8254.counter: 52444 kern.timecounter.tc.i8254.frequency: 1193182 kern.timecounter.tc.i8254.quality: 0 kern.timecounter.tc.ACPI-safe.mask: 4294967295 kern.timecounter.tc.ACPI-safe.counter: 3252982815 kern.timecounter.tc.ACPI-safe.frequency: 3579545 kern.timecounter.tc.ACPI-safe.quality: 850 kern.timecounter.tc.HPET.mask: 4294967295 kern.timecounter.tc.HPET.counter: 3443625641 kern.timecounter.tc.HPET.frequency: 14318180 kern.timecounter.tc.HPET.quality: 900 kern.timecounter.tc.TSC.mask: 4294967295 kern.timecounter.tc.TSC.counter: 1276479615 kern.timecounter.tc.TSC.frequency: 2819782573 kern.timecounter.tc.TSC.quality: -100 kern.timecounter.smp_tsc: 0 kern.timecounter.invariant_tsc: 1 > Finally, was this OS installation used on different hardware in the > past? Meaning: was the hard disk previously installed on another > machine? Nope. Brand new hw, hard drive, and FreeBSD 8.0-release install. Then I upgraded to 8.0-stable. > Why I'm asking: /var/db/ntpd.drift could be from an old > computer (the previous hardware), and the clock drift rate would be > different than that of your newer[1] hardware. No, /var/db/ntp.drift is created on this machine. -- Regards, Torfinn
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