Date: Thu, 15 May 2008 20:57:59 +0200 From: Volker Jahns <volker@thalreit.de> To: freebsd-questions@freebsd.org Cc: volker@thalreit.de Subject: time drift Message-ID: <20080515185758.GA12709@ikarus.thalreit>
next in thread | raw e-mail | index | archive | help
FreeBSD 6.2 running on X86 hardware (FSC) shows a remarkable time drift running ntpdate every half hour shows that the system looses about 10-14 sec each time. 15 May 10:06:48 ntpdate[7200]: step time server 192.53.103.108 offset -13.799602 sec 15 May 10:36:48 ntpdate[7515]: step time server 192.53.103.108 offset -12.813941 sec 15 May 11:06:48 ntpdate[7879]: step time server 192.53.103.108 offset -13.651921 sec 15 May 11:36:50 ntpdate[8079]: step time server 192.53.103.108 offset -11.109298 sec 15 May 12:06:50 ntpdate[8289]: step time server 192.53.103.108 offset -11.836499 sec FreeBSD 7.0 on an otherwise almost identical system has a time drift of a few millisecs every half hour. 15 May 10:35:00 ntpdate[7999]: adjust time server 192.53.103.108 offset 0.009963 sec 15 May 10:35:51 ntpdate[8007]: adjust time server 192.53.103.108 offset -0.004890 sec 15 May 10:50:00 ntpdate[8042]: adjust time server 192.53.103.108 offset 0.010734 sec 15 May 11:05:00 ntpdate[8088]: adjust time server 192.53.103.108 offset 0.004523 sec 15 May 11:20:01 ntpdate[8114]: adjust time server 192.53.103.108 offset 0.005800 sec The 6.2 system is a production system, has a uptime of almost 300 days and I don't want to experiment a lot with acpi, battery or so. What would be your suspicion on the large time drift of the FreeBSD 6.2 system? -- Volker Jahns, volker@thalreit.de
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20080515185758.GA12709>