Date: Wed, 6 Feb 2019 04:16:44 +0700 From: Eugene Grosbein <eugen@grosbein.net> To: Ian Lepore <ian@freebsd.org> Cc: FreeBSD <freebsd-stable@freebsd.org> Subject: Re: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-19:05.kqueue Message-ID: <6aa7990c-ed7e-c849-d04b-4d144d167c67@grosbein.net> In-Reply-To: <3954a6fd232be453e8632159892250cb3ae47d08.camel@freebsd.org> References: <20190109194030.DFE3A8CC7@freefall.freebsd.org> <20190205195416.5ddsmc4rf7og4ece@mutt-hbsd> <CAOtMX2gssNeEgvuY=8FDfGF%2B%2BaB2i50tRd=-LdfK0k7eD-_OFg@mail.gmail.com> <faaa6d3e1d48e2fa133be0c7158c78e625eae56a.camel@freebsd.org> <dd9b872b-8db5-0580-66ec-87bcf3ea75cd@grosbein.net> <3954a6fd232be453e8632159892250cb3ae47d08.camel@freebsd.org>
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06.02.2019 3:55, Ian Lepore wrote: > So your problem was most likely the gps receiver making a bad choice > before it had enough info to make a good choice. It's one of many > reasons why an ntp server should have at least 3 (really, at least 5) > peers, so it can reject obviously-insane data from a single source. > Even when you use a gps to get really accurate local time, you should > have a handful of network peers that can serve as sanity-checkers. And I have and had that moment: driftfile /var/db/ntpd.drift server Time2.Stupi.SE iburst maxpoll 9 server ntp1.sp.se iburst maxpoll 9 server ntp1.mmo.netnod.se iburst maxpoll 9 server ntp1.ptb.de iburst maxpoll 9 server ntp1.ien.it iburst maxpoll 9 server ntp1.sth.netnod.se iburst maxpoll 9 server 127.127.1.0 fudge 127.127.1.0 stratum 10 # Had to comment out following 3 lines after the incident #tos mindist 0.015 #server 127.127.20.1 mode 1 iburst maxpoll 9 prefer #fudge 127.127.20.1 stratum 10 time1 0.000 time2 0.000 flag1 1 flag3 1 refid PPS pool 0.freebsd.pool.ntp.org iburst restrict -4 default kod notrap nomodify nopeer noquery restrict -6 default kod notrap nomodify nopeer noquery restrict 127.0.0.1 restrict ::1 leapfile "/var/db/ntpd.leap-seconds.list"
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