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Am Dienstag, 25. November 2008 16:38:00 schrieb damian: |
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> > I agree. I been using ntp here and it works fine. If you need help |
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> > configuring it, let me know. Off list if needed, just put Gentoo in the |
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> > subject line. |
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> |
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> Ok, thanks Dale. But I can you tell me if there is any difference |
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> among ntp and htpdate? |
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Hmm, I first thought this was a typo of yours (which should have been |
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ntpdate), but then you did it again, so I asked Google. From htpdate's man |
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page: |
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|
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"The HTTP Time Protocol (HTP) is used to synchronize a computer's time with |
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web servers as reference time source. Htp will synchronize your computer's |
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time to Greenwich Mean Time (GMT) via HTTP headers from web servers. The |
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htpdate package includes a program for retrieving the date and time from |
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remote machines via a network. Htpdate works through proxy servers. Accuracy |
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of htpdate will be usually within 0.5 seconds (better with multiple servers). |
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If this is not good enough for you, try the ntpd package." |
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|
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So yes, there is a difference. With htpdate, you synchronize against a _web_ |
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server. How do you know it has a stable time source? OTOH, with ntp you |
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synchronize against a specialized network _time_ server which is usually |
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equiped with an accurate time souce*), using a protocol that was specifically |
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desigend for that purpose (for example the time is adjusted without jumps), |
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see http://www.ntp.org/ for all the details. |
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HTH... |
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Dirk |
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*) As an example ptbtime1.ptb.de, hosted by the "Physikalisch-Technische |
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Bundesanstalt" in germany is a so called stratum1 time server which is |
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connected to the most accurate clock on earth, which provides the official |
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time for germany. |
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