Date: Mon, 17 Nov 2008 15:29:05 -0500 From: "N.J. Thomas" <thomas@zaph.org> To: Jeremy Chadwick <koitsu@FreeBSD.org> Cc: questions@freebsd.org Subject: Re: FreeBSD not stable enough for Xen environments? Message-ID: <20081117202905.GO91662@zaph.org> In-Reply-To: <20081117200849.GA38672@icarus.home.lan> References: <f1019d520811140242x2e1d3e26x5ee001496710fd61@mail.gmail.com> <5635aa0d0811140711t6af42ef8i762a37eb059ede19@mail.gmail.com> <f1019d520811140832o7890c88cn78d70d6e0a60dd34@mail.gmail.com> <f1019d520811140832vb62180bn65abeb0ceb0274ed@mail.gmail.com> <20081117173845.GM91662@zaph.org> <26ddd1750811171147u5cc8f9b3k35f25c6caf9bc14f@mail.gmail.com> <20081117200102.GN91662@zaph.org> <20081117200849.GA38672@icarus.home.lan>
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* Jeremy Chadwick <koitsu@FreeBSD.org> [2008-11-17 12:08:49+0000]:
> > Intersting, I see the same in my logs, but the frequency seems to be
> > much less than yours, e.g. for the month of November:
>
> What time counter source does this box have available?
kern.timecounter.choice: TSC(-100) i8254(0) dummy(-1000000)
kern.timecounter.hardware: i8254
> Other ideas:
> Look into the "fudge" operator of ntp.conf.
Yeah, I'm already fudging my local clock a bit. From my ntp.conf:
# local clock
server 127.127.1.0
# don't trust local clock too much
fudge 127.127.1.0 stratum 10
> Try deleting your ntp driftfile. Note that if you do this, it will take
> a day or two for things to "level out". It tries to figure out the
> "average" skew rate your system clock has.
Hmm, my drift file looks decent enough:
$ cat /var/db/ntp.drift
10.047
And it's being updated regularly enough.
> Then there's a very good possibility it's hardware-related.
I'll ask the hosting company about it though to see if anyone has
brought this up.
Thomas
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