ntpd "STEP storm" with small offset

Denys Vlasenko vda.linux at googlemail.com
Wed Jul 25 17:04:20 UTC 2018


On Wed, Jul 25, 2018 at 4:58 PM, Ward WIllats <busybox at wardco.com> wrote:
>> If you do run busybox's ntpd, your messages may be from whatever script
>> is set up to run via ntpd -S SCRIPT option.
>
> Yes, the output is from my -S SCRIPT hotplug script, and I am printing out the environment variables ntpd.c sets before it exec's it -- I then send that text to our server. My dump is an SQL SELECT from the sever-side DB table where they land.
>
>> However, step offsets should be larger than 1 second.
>
> Yes. That is the problem. I assume ntpd.c is working just fine to discipline the clock, but I can't have it firing my script with tiny offsets all the time

This can't be happening on 1.27.2. Code simply does not do that. Step
offsets ought to be >= 1 second.

Please run ntpd with -ddd and post the log.


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