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Groups > linux.debian.user > #196475
| From | Abdullah Ramazanoğlu <ar018@yahoo.com> |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: Slow clock on Xen 4.8 after upgrade |
| Date | 2018-06-07 22:10 +0200 |
| Message-ID | <vY9ol-3Bd-3@gated-at.bofh.it> (permalink) |
| References | <vY8Vk-3a0-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, 7 Jun 2018 19:32:35 +0100 Mike said: [--8<--] > In the end I used adjtimex -t 10065 -f 3058784 to speed the clock up a > bit and that has allowed NTP to be able to keep it under control. > > So the issue with the slow clock appears to have been compenstated for > but I'd be intersted to know what actually caused it. I've drawn a bit > of a blank on that one and would be grateful if anyone could offer any > thoughts? Could there be a race condition between hwclock(8) and adjtimex? IOW, there is a possibility that perhaps there was a drift rate set by hwclock and this was the cause of excessive drift. Now that adjtimex counter balances hwclock by an opposite drift rate, it can result in hwclock and adjtimex fighting against each other. Just a possibility. I would have checked /etc/adjtime to ensure that no drift ratio set by hwclock. More info about hwclock drift setting and /etc/adjtime format in hwclock man page. Regards -- Abdullah Ramazanoğlu
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Slow clock on Xen 4.8 after upgrade Mike <debian@norgie.net> - 2018-06-07 21:40 +0200
Re: Slow clock on Xen 4.8 after upgrade Abdullah Ramazanoğlu <ar018@yahoo.com> - 2018-06-07 22:10 +0200
Re: Slow clock on Xen 4.8 after upgrade Mike <debian@norgie.net> - 2018-06-11 11:10 +0200
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