Date: Wed, 16 Jan 2013 18:56:06 +0100 From: "Ronald Klop" <ronald-freebsd8@klop.yi.org> To: freebsd-stable@freebsd.org Subject: Re: time issues and some more Message-ID: <op.wq0mrtuy8527sy@212-182-167-131.ip.telfort.nl> In-Reply-To: <E1TvPZ7-000NC7-5C@kabab.cs.huji.ac.il> References: <E1TvPZ7-000NC7-5C@kabab.cs.huji.ac.il>
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On Wed, 16 Jan 2013 10:45:49 +0100, Daniel Braniss <danny@cs.huji.ac.il> wrote: > I resently upgraded a Dell PowerEdge R710, to 9.1-stable, we mainly use > it as > a backup to several zfs servers (doing send|receive) without major > issues till > the upgrade, it was running 8.2-stable. > > now, we see that sometime the time drifts, and today I noticed that it > was > hung, and once I got unto the ipmi console this is what i got: > [SOL Session operational. Use ~? for help] > swap_pager: indefinite wait buffer: bufobj: 0, blkno: 3864, size: 12288 > > and things started moving again, > > in /var/log/messages: > Jan 16 03:27:35 store-02 kernel: swap_pager: indefinite wait buffer: > bufobj: > 0, blkno: 3864, size: 12288 > > but the REAL time is 7hs ahead!, so time stood still ? > and now, of course we get: > Jan 16 03:54:19 store-02 ntpd[38163]: time correction of 25216 seconds > exceeds > sanity limit (1000); set clock manually to the correct UTC time. > > I will now reboot, and try a newer kernel and check, but any insight will > be very helpful, > > thanks, > danny Does BSD 9 choose another timer source than BSD 8? Use sysctl to check these values at your system. kern.eventtimer.choice: LAPIC(400) i8254(100) RTC(0) kern.eventtimer.timer: LAPIC Or this ones. I always confuse these. kern.timecounter.choice: TSC-low(1000) ACPI-fast(900) i8254(0) dummy(-1000000) kern.timecounter.hardware: TSC-low Ronald.
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