Re: [ntp:questions] Sync issue

2010-09-12 Thread Andy Wright
On Thu, 2010-09-09 at 16:24 -0400, Richard B. Gilbert wrote: > Greene, Rick wrote: > > Cancel this...turns out, our network team had forgot to put a route in for > > this subnet, as it was a new subnet of our Class B IP range. > > > > All my testing was from a different subnet of the same Class B

Re: [ntp:questions] Sync issue

2010-09-12 Thread David Woolley
Andy Wright wrote: Virtual machines usually have their own RTC and NTP is essential for logging system information in conjunction with NTP synchronization logs to adhere to the policies of businesses or organizations. Virtual machines have a virtualisation of the physical machine's clock. M

Re: [ntp:questions] Allan deviation survey

2010-09-12 Thread unruh
On 2010-09-11, David L. Mills wrote: > David, > > With due respect, your comment has nothing to do with the issue. Allan > deviation is between a quartz crystal oscillator, timer interrupt, > interpolation mechanism and a kerel syscall to read. the clock. It has > nothing whatsoever to do with

Re: [ntp:questions] Allan deviation survey

2010-09-12 Thread David L. Mills
Bill, Please reread the definition of Allan deviation. It is a measure of frequency differences, not time errors. I principle, it could be applied to a virtual machine with virtual timer interrupts, but nobody familiar with the principles would do that and it would serve no useful purpose. Th