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Date:      Thu, 24 Sep 2015 11:12:29 +0200
From:      Erik Cederstrand <erik+lists@cederstrand.dk>
To:        dirkx@webweaving.org
Cc:        FreeBSD Hackers <hackers@freebsd.org>
Subject:   Re: What IS the right NTP behaviour ?
Message-ID:  <0CAEE340-B9DF-4772-8600-8A0904636452@cederstrand.dk>
In-Reply-To: <D5902190-FC96-427B-A8DE-89E66500E145@webweaving.org>
References:  <39337.1442999127@critter.freebsd.dk> <F6AF299A-17B1-44DF-B025-B8FA0BC833D4@kientzle.com> <CAJm4238%2BJCfg7Xb2vMJ4--4uLPXrjn6EJzuc8xJdAeA-aXr7-A@mail.gmail.com> <20150923192729.GB78209@numachi.com> <D5902190-FC96-427B-A8DE-89E66500E145@webweaving.org>

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> Den 23/09/2015 kl. 22.33 skrev dirkx@webweaving.org:
>=20
>=20
>> On 23 Sep 2015, at 21:27, Brian Reichert <reichert@numachi.com> =
wrote:
>>=20
>> On Wed, Sep 23, 2015 at 11:04:43AM -0700, Brandon Vincent wrote:
>>> On Wed, Sep 23, 2015 at 10:35 AM, Tim Kientzle <tim@kientzle.com> =
wrote:
>>>> One concern I keep running into:  Using NTP in VMs that are =
frequently suspended/resumed.  Though I suppose this may be covered by =
your 'workstation' scenario (just step it after VM resume when you see =
the large skew).
>>>=20
>>> I would assume your hypervisor would sync the clock upon VM events. =
Does it not?
>>=20
>> In my VMs that run an NTP client, I keep the hypervisor out of the
>> loop, and let the guest's NTP client to it's work.
>=20
>> =
..http://kb.vmware.com/selfservice/microsites/search.do?language=3Den_US&c=
md=3DdisplayKC&externalId=3D1006427
>=20
> Aye - but I=E2=80=99ve not found any clean way of doing that =E2=80=94 =
now a small rc.d file does a stop of ntpd, an ntpdate (because the jumps =
are bigger than what ntpd by default will accomodate) and a restart of =
ntpd.

Does "tinker panic 0" in /etc/ntp.conf not work for you?

Erik



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