Date: Tue, 10 Jul 2007 15:40:31 +0700 From: Victor Snezhko <snezhko@indorsoft.ru> To: Ivan Voras <ivoras@fer.hr> Cc: freebsd-hackers@freebsd.org, freebsd-current@freebsd.org Subject: Re: Debugging time Message-ID: <usl7w648w.fsf@indorsoft.ru> In-Reply-To: <46934301.5080302@fer.hr> (Ivan Voras's message of "Tue, 10 Jul 2007 10:27:45 %2B0200") References: <f6u94s$v6o$1@sea.gmane.org> <usl7wvnc9.fsf@indorsoft.ru> <46934301.5080302@fer.hr>
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Ivan Voras <ivoras@fer.hr> writes: >> For about half a year I have another weirdness with time on my >> -current box without vmware, maybe it's somehow has common origins >> with your behaviour. When I boot FreeBSD, ntpdate (which is set up to >> run via rc.conf) often reports huge time offsets: >> 10 Jul 12:04:34 ntpdate[51761]: step time server ntp.server.name offset 234456.074166 sec >> >> I have so far only noticed that the value of the the offset is roughly >> equal to the amount of time when FreeBSD isn't running (this is a >> dual-boot box with windows). The box is pretty old, 600-MHz Celeron > > Is the above number correct (i.e. ~~ 65 hours)? Yes, sometimes my FreeBSD is not running for several days - in this case ntpdate prints such numbers. It looks like kernel stores date and time values somewhere and then re-reads them. I still don't rule out some stupidity on my part - the behaviour I'm observing is very illogic. Maybe I should try installing current from a fresh snapshot when it's released. > I noticed there can be a consistent "shift" of duration equal to > your timezone when VMWare sets the RTC to the host's local time and > FreeBSD thinks it's UTC. But if the difference is not constant, it's > not it. When I just reboot FreeBSD, offset doesn't exceed one or two seconds (notably, bios takes longer to boot, about 5-10 seconds). When BSD is inactive for several hours, number is much bigger. I neglected to debug this deeply before - I assumed I have overlooked something simple, but now that you have reported another issue in the similar area, I'll try to collect full information. -- WBR, Victor V. Snezhko E-mail: snezhko@indorsoft.ru
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