On Tue, 16 Sep 2008 15:10:33 +0300 (EEST) "Ilpo Järvinen" <ilpo.jarvinen@xxxxxxxxxxx> wrote: > Only thing I know to ask is, do you have any idea if your ntpd is > hard-stepping the time instead of adjusting the clock's rate a bit (the > latter should keep the clock monotonious besides potential bugs)? I assume it's adjusting the clock's rate a bit. Anyway, it's a pretty simple config: fraga@teleporto ~$ cat /etc/ntp.conf server ntp.usp.br server ntp.nasa.gov driftfile /etc/ntp.drift And ntpd is running without any special parameters. The log messages are as simple as: Sep 15 03:56:04 teleporto ntpd[2301]: frequency initialized 5.891 PPM from /etc/ntp.drift Sep 15 03:59:25 teleporto ntpd[2304]: frequency initialized 5.891 PPM from /etc/ntp.drift Sep 15 04:03:49 teleporto ntpd[2304]: synchronized to 143.107.255.15, stratum 2 Sep 15 04:03:49 teleporto ntpd[2304]: kernel time sync status change 0001 Sep 15 04:10:16 teleporto ntpd[2304]: synchronized to 198.123.30.132, stratum 1 Sep 15 04:11:58 teleporto ntpd[2301]: frequency initialized 5.891 PPM from /etc/ntp.drift Sep 15 04:16:18 teleporto ntpd[2301]: synchronized to 198.123.30.132, stratum 1 Sep 15 04:16:18 teleporto ntpd[2301]: kernel time sync status change 0001 Sep 15 12:08:53 teleporto ntpd[2301]: kernel time sync status change 4001 Sep 15 12:34:31 teleporto ntpd[2301]: kernel time sync status change 0001 Sep 15 14:34:06 teleporto ntpd[2301]: kernel time sync status change 4001 Sep 15 14:51:12 teleporto ntpd[2301]: kernel time sync status change 0001 If I understood correctly what do you mean, ntpd adjusts nicely the time to not cause huge differences in the time. And we're reaching the conclusion that the timer code from 2.6.25 and above have something wrong, since 2.6.24 and below is ok, which causes those stalls. But I'll wait some more time to confirm this, although I'm almost sure it's a timer related bug which has this colateral effect of stalling connections. And just a question: do you use ntpd on your own desktop? Thank you! -- -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
