[ntp:questions] Re: ntpd, boot time, and hot plugging

Danny Mayer mayer at gis.net
Wed Feb 9 01:58:20 UTC 2005

At 05:05 AM 2/8/2005, You have no need to know wrote:
>Abandoning the right to remain silent, Brad Knowles at Sun, 06 Feb 2005
>19:49:54 +0100 said:
> > At 11:13 AM +0000 2005-02-06, Per Hedeland wrote:
> >
> >>  Well, that output only shows it doing the DNS lookups in sequence - it's
> >>  a bit of a pain to do it any other way given the synchronous nature of
> >>  gethostby*().
> >
>I tried it by doing a 'ntp -n -c pe' and putting the resulting 16 IPs in
>"ntpdate -d ..."
>The first run took ~19 secs, most of which was *reverse* lookups of all
>the IPs.

Did you create a query log in your DNS? If so can you send it to me
so I can analyze it? Did you do the same thing running with ntpd?

You can send this to me directly rather than to the mailing list.


>The following 3 runs each took between 3 and 4 secs.
>I do run a nameserver on the same box. Apart from caching responses, this
>smooths out response from dead nameservers because named caches the
>response time and tries the relevent NS with the best response time.
>Avoid reality at all costs.
>$email =~ s/n(.)a(.)n(.)a(.)e(.+)invalid/$1$2$3$4$5au/;
>icbm: 33.43.46S 150.59.27E
>questions mailing list
>questions at lists.ntp.isc.org

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