Re: time drift

2008-05-16 Thread Volker Jahns
Volker Jahns wrote: Bruce Cran wrote: Volker Jahns wrote: On Thu, May 15, 2008 at 09:53:02PM +0200, Volker Jahns wrote: On Thu, May 15, 2008 at 12:18:57PM -0700, Chuck Swiger wrote: On May 15, 2008, at 11:57 AM, Volker Jahns wrote: FreeBSD 6.2 running on X86 hardware (FSC) shows a remarkable

Re: time drift

2008-05-16 Thread Volker Jahns
Bruce Cran wrote: Volker Jahns wrote: On Thu, May 15, 2008 at 09:53:02PM +0200, Volker Jahns wrote: On Thu, May 15, 2008 at 12:18:57PM -0700, Chuck Swiger wrote: On May 15, 2008, at 11:57 AM, Volker Jahns wrote: FreeBSD 6.2 running on X86 hardware (FSC) shows a remarkable time drift runnin

Re: time drift

2008-05-15 Thread perryh
> 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 ... offset -13.799602 sec > 15 May 10:36:48 ntpdate[7515]: step time ... offset -12.81

Re: time drift

2008-05-15 Thread Luke Dean
On Thu, 15 May 2008, Christopher Cowart wrote: David Kelly wrote: Its PC commodity-grade. Not all that unusual even for stuff sold claiming to be a "server". This is in no small part why ntpd exists. nptd calculates a correction coefficient and (under FreeBSD) stores it in /var/db/ntpd.drift

Re: time drift

2008-05-15 Thread Chuck Swiger
On May 15, 2008, at 12:53 PM, Volker Jahns wrote: While you should run ntpdate -b at system boot, running ntpdate periodically via cron is not the right thing to do-- you should run ntpd instead, and that will figure out the intrinsic correction your chosen system clock needs to keep better time

Re: time drift

2008-05-15 Thread D Hill
On Thu, 15 May 2008 at 14:16 -0700, [EMAIL PROTECTED] confabulated: David Kelly wrote: Its PC commodity-grade. Not all that unusual even for stuff sold claiming to be a "server". This is in no small part why ntpd exists. nptd calculates a correction coefficient and (under FreeBSD) stores it in

Re: time drift

2008-05-15 Thread Chuck Swiger
On May 15, 2008, at 2:16 PM, Christopher Cowart wrote: We run a large number of FreeBSD servers under vmware. We've seen ntpd silently die, because the drift becomes "insane." What do others do in this situation? (We've resorted to croning ntpdate for VMs.) You run ntpd in the parent OS, rather

Re: time drift

2008-05-15 Thread Bruce Cran
Volker Jahns wrote: On Thu, May 15, 2008 at 09:53:02PM +0200, Volker Jahns wrote: On Thu, May 15, 2008 at 12:18:57PM -0700, Chuck Swiger wrote: On May 15, 2008, at 11:57 AM, Volker Jahns wrote: FreeBSD 6.2 running on X86 hardware (FSC) shows a remarkable time drift running ntpdate every hal

Re: time drift

2008-05-15 Thread Christopher Cowart
David Kelly wrote: > Its PC commodity-grade. Not all that unusual even for stuff sold > claiming to be a "server". This is in no small part why ntpd exists. > > nptd calculates a correction coefficient and (under FreeBSD) stores it > in /var/db/ntpd.drift for use on next start so as to more quickl

Re: time drift

2008-05-15 Thread David Kelly
On Thu, May 15, 2008 at 08:57:59PM +0200, Volker Jahns wrote: > 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

Re: time drift

2008-05-15 Thread Volker Jahns
On Thu, May 15, 2008 at 09:53:02PM +0200, Volker Jahns wrote: > On Thu, May 15, 2008 at 12:18:57PM -0700, Chuck Swiger wrote: > > On May 15, 2008, at 11:57 AM, Volker Jahns wrote: > > >FreeBSD 6.2 running on X86 hardware (FSC) shows a remarkable time > > >drift > > > > > >running ntpdate every ha

Re: time drift

2008-05-15 Thread Volker Jahns
On Thu, May 15, 2008 at 12:18:57PM -0700, Chuck Swiger wrote: > On May 15, 2008, at 11:57 AM, Volker Jahns wrote: > >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

RE: time drift

2008-05-15 Thread Bob McConnell
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Volker Jahns Sent: Thursday, May 15, 2008 2:58 PM To: freebsd-questions@freebsd.org Cc: [EMAIL PROTECTED] Subject: time drift FreeBSD 6.2 running on X86 hardware (FSC) shows a remarkable time drift running n

Re: time drift

2008-05-15 Thread Chuck Swiger
On May 15, 2008, at 11:57 AM, Volker Jahns wrote: 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