[ntp:questions] How do I prevent sudden system time jumps.

2011-07-13 Thread Lars Ericsson
Hi all, I have been running the ntp client on a Linux platform for some time and have not seen any problems. I recently run into a strange behavior where our communication software failed on some critical timeouts. After some investigation we found out the the system time suddenly made a jump wit

Re: [ntp:questions] How do I prevent sudden system time jumps.

2011-07-13 Thread Lars Ericsson
Hi Chuck, Thanks for a prompt and precise answer. > > I have been running the ntp client on a Linux platform for some time and > > have not seen any problems. > > Is this a VM? No, it's real HW, believe it or not ;) > > My question is: How do I prevent NTP clock adjustments from jumping. OK, >

Re: [ntp:questions] How do I prevent sudden system time jumps.

2011-07-13 Thread Lars Ericsson
I have been running the ntp client on a Linux platform for some time and have not seen any problems. >>> >>> Is this a VM? >> >> No, it's real HW, believe it or not ;) > > OK.  I asked since a timewarp of 200ms is a bit surprising for real HW, but > is something to be expected if you wer

Re: [ntp:questions] How do I prevent sudden system time jumps.

2011-07-13 Thread Lars Ericsson
Thanks for the reply. >> I recently run into a strange behavior where our communication software >> failed on some critical timeouts. >> After some investigation we found out the the system time suddenly made a >> jump with 200ms. > > Yup. ntpd makes huge statements about the importance of keeping

Re: [ntp:questions] How do I prevent sudden system time jumps.

2011-07-16 Thread Lars Ericsson
Hi All, Thanks for your efforts trying to help me with this issue. I understand that the reason for ntp to adjust with a sudden jumps may be many. Some of them may be possible to prevent some others not. My problem is that it MUST NOT JUMP. I'm currently running a few tests, trying to verify the