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Phenomic69
n00b
Joined: 20 Jun 2003
Posts: 56
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 Posted: Wed Jul 09, 2003 4:24 pm Post subject: Trouble with my clock |
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| I usually sync to time.nist.gov once every few days. I am dual booting windows and I usually have it sync to the same server. I am in Eastern Time in the US. My problem is that whenever I sync in one operating system, the other operating system is 4 hours off. I made a link in my install to put in the correct timezone, I also pciked the right one in windows. Is there any way I can get my time to be right in both operating systems without affecting each other. I think it has something to do with how they report to the hardware clock. |
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ctford0
l33t
Joined: 25 Oct 2002
Posts: 774
Location: Lexington, KY,USA
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| Posted: Wed Jul 09, 2003 4:31 pm Post subject: |
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make sure you have local time set in your rc.conf file.
chris |
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hensan
l33t
Joined: 26 Jun 2003
Posts: 868
Location: Sweden
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| Posted: Wed Jul 09, 2003 9:29 pm Post subject: |
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And if that doesn't help, try deleting the file /etc/adjtime, this was causing problems for me.
[edit]
After deleting the file, sync time again and do a hwclock -w
[/edit] |
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goanuj
Tux's lil' helper
Joined: 13 Jul 2002
Posts: 125
Location: California
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| Posted: Fri Jul 11, 2003 12:48 am Post subject: sync'ing? |
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| how does one sync? is there a howto for this? |
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Phenomic69
n00b
Joined: 20 Jun 2003
Posts: 56
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| Posted: Fri Jul 11, 2003 2:21 am Post subject: |
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You need ntptools:
## emerge ntptools
and then i usually just do this command:
## ntpdate time.nist.gov
and as the previous post states, if you want to set your hardware clock to this value do a:
## hwclock -w |
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goanuj
Tux's lil' helper
Joined: 13 Jul 2002
Posts: 125
Location: California
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| Posted: Fri Jul 11, 2003 2:44 am Post subject: ntpdate question |
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does ntpdate sync the time in the background or is it just a one time thing?
(I would prefer a one time sync)
| Phenomic69 wrote: |
## ntpdate time.nist.gov
and as the previous post states, if you want to set your hardware clock to this value do a:
## hwclock -w |
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ctford0
l33t
Joined: 25 Oct 2002
Posts: 774
Location: Lexington, KY,USA
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| Posted: Fri Jul 11, 2003 8:01 am Post subject: |
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ntpdate is a one time deal, but pc clocks are awful about keeping time correctly. there is also a dameon that comes with this called ntpd. setting up ntpd will run ntp often enough to keep your system always uptodate...
chris |
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philip99
n00b
Joined: 07 Jul 2003
Posts: 7
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| Posted: Fri Jul 11, 2003 9:38 am Post subject: |
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| Phenomic69 wrote: | ## ntpdate time.nist.gov
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Actually... time.nist.gov is not considered open for public... Have a look at the official ntp daemon site: http://www.eecis.udel.edu/%7emills/ntp/servers.html (bottom; under stratum1 servers) .. It states that time.nist.gov is open for stratum2 serveres only (+ ppl with an arrangement)
Not that ppl give a damn anyway  |
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puke
Tux's lil' helper
Joined: 05 Oct 2002
Posts: 128
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| Posted: Tue Jul 22, 2003 10:06 am Post subject: |
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| Quote: | | there is also a dameon that comes with this called ntpd. |
ntpdate is a ntp client that connects to a ntp server. ntpd is a ntp server that listens for ntp client connections.
In the interests of security you should not use ntpd unless absolutely necessary. Most installations can get away with running ntpdate at regular intervals. Leave time serving up to the time servers!
You can also list multiple time servers with ntpdate eg:
| Code: | | ntpdate time1.edu time2.edu time3.edu |
and get a result that is the best of all three. Also helps if one goes down. |
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hulk2nd
Guru
Joined: 25 Mar 2003
Posts: 512
Location: Freiburg, Germany
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| Posted: Tue Jul 22, 2003 10:14 am Post subject: |
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| there is a very good ntpd howto somewhere on this board. try searching for it |
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ctford0
l33t
Joined: 25 Oct 2002
Posts: 774
Location: Lexington, KY,USA
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| Posted: Tue Jul 22, 2003 1:05 pm Post subject: |
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| puke wrote: | | Quote: | | there is also a dameon that comes with this called ntpd. |
ntpdate is a ntp client that connects to a ntp server. ntpd is a ntp server that listens for ntp client connections.
In the interests of security you should not use ntpd unless absolutely necessary. Most installations can get away with running ntpdate at regular intervals. Leave time serving up to the time servers!
You can also list multiple time servers with ntpdate eg:
| Code: | | ntpdate time1.edu time2.edu time3.edu |
and get a result that is the best of all three. Also helps if one goes down. |
Take a look at man ntpd!!!!
| Quote: |
DESCRIPTION
The ntpd program is an operating system daemon which sets and maintains the system time of day in synchronism with Internet standard time servers. It is a complete implementation of the Network Time Protocol (NTP) version 4, but also retains compatibility with version 3, as defined by RFC-1305, and version 1 and 2, as defined by RFC-1059 and RFC-1119, respectively. ntpd does most computations in 64-bit floating point arithmetic and does relatively clumsy 64-bit fixed point operations only when necessary to preserve the ultimate precision, about 232 picoseconds. While the ultimate precision, is not achievable with ordinary workstations and networks of today, it may be required with future gigahertz CPU clocks and gigabit LANs.
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Although reading further it can act as a server, but it can operate in a number of different modes.
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By default, ntpd runs in continuous mode where each of possibly several external servers is polled at intervals determined by an intricate state machine.
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The manual suggests that ntpd can be processor intensive sometimes and might not be suited for workstations. It suggests that if you can't afford a few clock cycles that you should setup a cron to run ntpdate.
Chris |
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