[ntp:questions] iburst
terrypearl
fastsnip-bcard at yahoo.com
Mon Nov 27 01:36:22 UTC 2006
Richard B. Gilbert wrote:
> terrypearl wrote:
>
>> Added "iburst" to the server line in /etc/ntp.conf as:
>>
>> server 0.north-america.pool.ntp.org iburst
>> server 1.north-america.pool.ntp.org iburst
>> server 2.north-america.pool.ntp.org iburst
>>
>> I understood that adding the 'iburst' would spee synch on boot.
>>
>> Unfortunately, it hasn't. It still takes anywhere from 3 to 5 minutes
>> to synch.
>>
>> Is there a way to reduce the synch time to seconds instead of minutes??
>>
>
> Not really. Even with iburst it takes something like twenty seconds to
> collect the information necessaray to START synchronizing the clock. The
> maximum slew rate of 500 parts per million means that it takes a while
> to correct any error. I think that your "3 to 5 minutes" applies to a
> "warm start"; e.g. starting with a good drift file. A cold start takes
> something like thirty minutes to get tight synchronization.
>
> This is all relative. If you start ntpd with -q and use iburst you will
> probably not be off by more than 100 milliseconds.
>
> If you need to be in tight synchronization at all times, don't ever shut
> down!!! If your O/S requires frequent reboots, change to a better one.
Not shutting down uses more electricity - since I am paying the bill on
that instead of my employer, of which I have none being on disability
and a fixed income which gets relatively smaller every year, I prefer to
keep my costs as low as possible. Do you have any more wise-ass remarks
on how to spend my money????
Running Linux Fedora Core 5. Do you prefer Windows???
It doesn't require reboots - just shutting down daily when I am not
using the machine.
Terry
>
--
++++++++++++++++++++++++++++++++++++++++++++++++++++++
======================================================
******************************************************
If you are always rushing towards the future,
Then you never have any past.
Terry Boldt
******************************************************
Paraphrasing Ben Franklin:
Those who sacrifice freedom for safety, have neither.
The exact quote:
They that can give up essential liberty to obtain a little
temporary safety deserve neither liberty nor safety.
Benjamin Franklin (1706 - 1790),
US author, diplomat, inventor, physicist, politician, & printer
Historical Review of Pennsylvania, 1759
******************************************************
More information about the questions
mailing list