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Groups > comp.os.linux.advocacy > #690148
| From | Farley Flud <ff@linux.rocks> |
|---|---|
| Subject | Re: GNU/Linux System Clock Drift |
| Newsgroups | comp.os.linux.advocacy |
| References | (2 earlier) <pan$6f150$4c153c1c$b1bcf39d$6e77b759@linux.rocks> <681f4d6a$0$29723$426a74cc@news.free.fr> <pan$a7d42$ca40100a$30e28695$c2b13a4@linux.rocks> <igou1klojbbpmlpc73f0dgimfjt39utgui@4ax.com> <681f7a55$0$420$426a34cc@news.free.fr> |
| Message-Id | <pan$cb901$a4cc3cd3$8442fc4e$beb0941c@linux.rocks> |
| Date | 2025-05-10 21:40 +0000 |
| Organization | UsenetExpress - www.usenetexpress.com |
On 10 May 2025 16:09:58 GMT, Stéphane CARPENTIER wrote: > > The hardware drifts, yes, there is no way around. But the system can > estimate its drift and compensate for it. So, once again, unlike your > beliefs, my hardware drift but my system doesn't. > Both the hardware and system clocks will drift. The hardware clock is maintained by the BIOS. The system clock is maintained by counting the timer interrupts and there are adjustments that can make this more accurate but it will still drift. That's why there is synchronization, usually, but not only, with NTP time servers. The issue becomes how often does the system clock need to be synchronized. I do this at each boot using openrdate. The distros probably do it much more often. I could also do it more often but I choose not to do so. There is no need for me to sync frequently. File time stamps will never be more than a second or two off and that is of no consequence. But the important fact is that _I_ choose to do it. I do not follow any distro but make my own decisions. > > Of course my system does include leap seconds. > What does this command output: TZ='/usr/share/zoneinfo/GMT' date +%s --date="May 10 2025" It should output "1746835227." If not then your system does not include leap seconds. -- Systemd: solving all the problems that you never knew you had.
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GNU/Linux System Clock Drift Farley Flud <ff@linux.rocks> - 2025-05-08 19:18 +0000
Re: GNU/Linux System Clock Drift candycanearter07 <candycanearter07@candycanearter07.nomail.afraid> - 2025-05-09 19:50 +0000
Re: GNU/Linux System Clock Drift Joel <joelcrump@gmail.com> - 2025-05-09 15:56 -0400
Re: GNU/Linux System Clock Drift Stéphane CARPENTIER <sc@fiat-linux.fr> - 2025-05-09 21:19 +0000
Re: GNU/Linux System Clock Drift Joel <joelcrump@gmail.com> - 2025-05-09 17:25 -0400
Re: GNU/Linux System Clock Drift rbowman <bowman@montana.com> - 2025-05-10 03:23 +0000
Re: GNU/Linux System Clock Drift Stéphane CARPENTIER <sc@fiat-linux.fr> - 2025-05-10 10:25 +0000
Re: GNU/Linux System Clock Drift rbowman <bowman@montana.com> - 2025-05-10 19:51 +0000
Re: GNU/Linux System Clock Drift Farley Flud <ff@linux.rocks> - 2025-05-10 21:55 +0000
Re: GNU/Linux System Clock Drift candycanearter07 <candycanearter07@candycanearter07.nomail.afraid> - 2025-05-11 19:00 +0000
Re: GNU/Linux System Clock Drift Farley Flud <ff@linux.rocks> - 2025-05-10 10:59 +0000
Re: GNU/Linux System Clock Drift Joel <joelcrump@gmail.com> - 2025-05-10 07:03 -0400
Re: GNU/Linux System Clock Drift Stéphane CARPENTIER <sc@fiat-linux.fr> - 2025-05-10 12:58 +0000
Re: GNU/Linux System Clock Drift Farley Flud <ff@linux.rocks> - 2025-05-10 13:29 +0000
Re: GNU/Linux System Clock Drift Joel <joelcrump@gmail.com> - 2025-05-10 10:26 -0400
Re: GNU/Linux System Clock Drift Stéphane CARPENTIER <sc@fiat-linux.fr> - 2025-05-10 16:09 +0000
Re: GNU/Linux System Clock Drift Farley Flud <ff@linux.rocks> - 2025-05-10 21:40 +0000
Re: Farley Fucktard brags about setting his clock (was: GNU/Linux System Clock Drift) Tyrone <none@none.none> - 2025-05-11 14:51 +0000
Re: Farley Fucktard brags about setting his clock (was: GNU/Linux System Clock Drift) Farley Flud <fflud@gnu.rocks> - 2025-05-11 15:40 +0000
Re: Farley Fucktard brags about setting his clock (was: GNU/Linux System Clock Drift) Joel <joelcrump@gmail.com> - 2025-05-11 15:02 -0400
Re: GNU/Linux System Clock Drift Lawrence D'Oliveiro <ldo@nz.invalid> - 2025-05-12 01:26 +0000
Re: GNU/Linux System Clock Drift Stéphane CARPENTIER <sc@fiat-linux.fr> - 2025-05-16 20:32 +0000
Re: GNU/Linux System Clock Drift % <pursent100@gmail.com> - 2025-05-16 13:41 -0700
Re: GNU/Linux System Clock Drift Rudy Canoza <rudy.c@kone.net> - 2025-05-11 07:02 -0400
Re: GNU/Linux System Clock Drift Joel <joelcrump@gmail.com> - 2025-05-11 08:01 -0400
Re: GNU/Linux System Clock Drift Rudy Canoza <rudy.c@kone.net> - 2025-05-11 09:24 -0400
Re: GNU/Linux System Clock Drift Joel <joelcrump@gmail.com> - 2025-05-11 15:01 -0400
Re: GNU/Linux System Clock Drift Rudy Canoza <rudy.c@kone.net> - 2025-05-11 16:14 -0400
Re: GNU/Linux System Clock Drift Joel <joelcrump@gmail.com> - 2025-05-11 16:21 -0400
Re: GNU/Linux System Clock Drift Rudy Canoza <rudy.c@kone.net> - 2025-05-12 03:39 -0400
Re: GNU/Linux System Clock Drift Joel <joelcrump@gmail.com> - 2025-05-12 03:45 -0400
Re: GNU/Linux System Clock Drift Rudy Canoza <rudy.c@kone.net> - 2025-05-12 04:14 -0400
Re: GNU/Linux System Clock Drift Joel <joelcrump@gmail.com> - 2025-05-12 04:26 -0400
Re: GNU/Linux System Clock Drift Rudy Canoza <rudy.c@kone.net> - 2025-05-12 09:27 -0400
Re: GNU/Linux System Clock Drift vallor <vallor@cultnix.org> - 2025-05-12 10:26 +0000
Re: GNU/Linux System Clock Drift Rudy Canoza <rudy.c@kone.net> - 2025-05-12 09:28 -0400
Re: GNU/Linux System Clock Drift vallor <vallor@cultnix.org> - 2025-05-12 14:05 +0000
Re: GNU/Linux System Clock Drift Rudy Canoza <rudy.c@kone.net> - 2025-05-12 10:27 -0400
Re: GNU/Linux System Clock Drift vallor <vallor@cultnix.org> - 2025-05-12 14:51 +0000
Re: GNU/Linux System Clock Drift Scott Doty <doty@dooty.net> - 2025-05-12 11:00 -0400
Re: GNU/Linux System Clock Drift Rudy Canoza <rudy.c@kone.net> - 2025-05-12 12:01 -0400
Re: GNU/Linux System Clock Drift Rudy Canoza <rudy.c@kone.net> - 2025-05-12 11:03 -0400
Re: GNU/Linux System Clock Drift CrudeSausage <crude@sausa.ge> - 2025-05-12 20:30 -0400
Re: GNU/Linux System Clock Drift CrudeSausage <crude@sausa.ge> - 2025-05-11 20:28 -0400
Re: GNU/Linux System Clock Drift Joel <joelcrump@gmail.com> - 2025-05-11 20:32 -0400
Re: GNU/Linux System Clock Drift Rudy Canoza <rudy.c@kone.net> - 2025-05-12 03:40 -0400
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