Re: time jumps forward/backwards

2009-09-01 Thread Benjamin Gamsa
Benjamin Herrenschmidt wrote: On Mon, 2009-08-31 at 23:57 -0400, Benjamin Gamsa wrote: Sean MacLennan wrote: On Mon, 31 Aug 2009 22:20:00 -0400 Benjamin Gamsa wrote: For what it's worth, the problem occurs even when ntp is not even started. This is grasping, but could it have anythi

Re: time jumps forward/backwards

2009-08-31 Thread Benjamin Gamsa
Sean MacLennan wrote: On Mon, 31 Aug 2009 22:20:00 -0400 Benjamin Gamsa wrote: For what it's worth, the problem occurs even when ntp is not even started. This is grasping, but could it have anything to do with the jiffies wrapping near startup? I don't know how to test it, b

Re: time jumps forward/backwards

2009-08-31 Thread Benjamin Gamsa
Benjamin Gamsa wrote: Benjamin Gamsa wrote: Paul Mackerras wrote: Ben Gamsa writes: It appears to be the case that when the time on the system is around the epoch (1970), that time will occasionally jump forward and then backward by about 17592 seconds. When it jumps forward, it always

Re: time jumps forward/backwards

2009-08-31 Thread Benjamin Gamsa
Benjamin Gamsa wrote: Paul Mackerras wrote: Ben Gamsa writes: It appears to be the case that when the time on the system is around the epoch (1970), that time will occasionally jump forward and then backward by about 17592 seconds. When it jumps forward, it always jumps back a few

Re: time jumps forward/backwards

2009-08-31 Thread Benjamin Gamsa
Paul Mackerras wrote: Ben Gamsa writes: It appears to be the case that when the time on the system is around the epoch (1970), that time will occasionally jump forward and then backward by about 17592 seconds. When it jumps forward, it always jumps back a few milliseconds later. However, it