Re: hwclock can cause system lockup

2008-10-19 Thread Tod Merley
On Fri, Oct 17, 2008 at 7:09 AM, Chris [EMAIL PROTECTED] wrote: 2008/10/17 g [EMAIL PROTECTED]: if you would like to make your life a little easier, set up one of your local boxes, that has internet access, to act as a local server. let it check 'outside' for time, then you can sync all boxes

Re: hwclock can cause system lockup

2008-10-19 Thread g
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tod Merley wrote: snip Time Server -- Often GPS NTP Time Server I suppose it adds a bit of expense but the time accuracy would be increased. syncing to a cell phone's clock would be very inexpensive. accuracy would be of provider. - -- tc,hago.

Re: hwclock can cause system lockup

2008-10-17 Thread Chris
First of all, thanks for all the replies. Some useful suggestions in there which I'll be trying this morning. 2008/10/17 Mikkel L. Ellertson [EMAIL PROTECTED] runs /sbin/hwclock --utc --hctosys to sync the hardware clock to the system clock. But this is syncing the system clock to the

Re: hwclock can cause system lockup

2008-10-17 Thread Chris
2008/10/17 Todd Denniston [EMAIL PROTECTED] Mikkel L. Ellertson wrote, On 10/16/2008 05:23 PM: What are you trying to do with this cron job? You are updating the system clock from the hardware clock, and not the other way around, as you say you are trying to do. The system does synchronize

Re: hwclock can cause system lockup

2008-10-17 Thread Chris
2008/10/17 g [EMAIL PROTECTED]: if you would like to make your life a little easier, set up one of your local boxes, that has internet access, to act as a local server. let it check 'outside' for time, then you can sync all boxes to a local time server and *all* of you local network will be

Re: hwclock can cause system lockup

2008-10-17 Thread g
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Chris wrote: Thanks for the idea but these machines are sent out to various sites, snip ok. if system time syncing is supper critical, have you considered time sync with a radio clock? again, check '/usr/share/doc/ntp*'. and you can google for

Re: hwclock can cause system lockup

2008-10-17 Thread Todd Denniston
Chris wrote, On 10/17/2008 06:46 AM: First of all, thanks for all the replies. Some useful suggestions in there which I'll be trying this morning. 2008/10/17 Mikkel L. Ellertson [EMAIL PROTECTED] runs /sbin/hwclock --utc --hctosys to sync the hardware clock to the system clock. But this is

Re: hwclock can cause system lockup

2008-10-17 Thread Ian Burrell
Todd Denniston Todd.Denniston at ssa.crane.navy.mil writes: 1) you don't need to call hwclock while NTP is running to keep the hardware clock synced to system time, the kernel hackers helpfully put a sneak circuit in the ntp implementation in the _kernel_ such that if NTP declares a good

Re: hwclock can cause system lockup

2008-10-17 Thread Todd Denniston
Ian Burrell wrote, On 10/17/2008 02:40 PM: Todd Denniston Todd.Denniston at ssa.crane.navy.mil writes: 1) you don't need to call hwclock while NTP is running to keep the hardware clock synced to system time, the kernel hackers helpfully put a sneak circuit in the ntp implementation in the

Re: hwclock can cause system lockup

2008-10-17 Thread Nifty Fedora Mitch
On Fri, Oct 17, 2008 at 05:42:49PM -0400, Todd Denniston wrote: Ian Burrell wrote, On 10/17/2008 02:40 PM: Todd Denniston Todd.Denniston at ssa.crane.navy.mil writes: 1) you don't need to call hwclock while NTP is running to keep the hardware clock synced to system time, the kernel hackers

hwclock can cause system lockup

2008-10-16 Thread Chris Mocock
I've got an hourly cron job on some machines that runs /sbin/hwclock --utc --hctosys to sync the hardware clock to the system clock. These machines were recently upgraded from an old custom RH7.3 installation to a custom spin of Fedora 9 and started to occassionally lock up - every day or three. I

Re: hwclock can cause system lockup

2008-10-16 Thread Mikkel L. Ellertson
On Thu, Oct 16, 2008 at 8:19 AM, Chris Mocock [EMAIL PROTECTED] wrote: I've got an hourly cron job on some machines that runs /sbin/hwclock --utc --hctosys to sync the hardware clock to the system clock. These machines were recently upgraded from an old custom RH7.3 installation to a custom

Re: hwclock can cause system lockup

2008-10-16 Thread Mikkel L. Ellertson
Todd Denniston wrote: If you don't have an ntp source, using /etc/adjtime (with `hwclock --adjust` after appropriate disciplining), the quartz time of the hardware clock can be SIGNIFICANTLY better than system time, so if you pull the hardware clock into your system in a reasonable