[ntp:questions] NTP on embedded Linux with GPRS connection

Miroslav Lichvar mlichvar at redhat.com
Thu Nov 24 11:59:05 UTC 2011

On Wed, Nov 23, 2011 at 08:06:28AM -0800, mass85 at tlen.pl wrote:
> - use hwclock --adjust. So after ntpd synchronises the time, I would
> have to issue "hwclock -w -u" and repeat it after at least 24h, so
> hwclock can estimate the drift. Then repeat this process.

To use the --adjust option with ntpd you'll need to make sure the
kernel RTC synchronization (11 minute mode) is not enabled as it would
throw off the RTC drift estimation. See hwclock(8) for more

Miroslav Lichvar

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