Re: Flaky timekeeping?
Brian Willoughby <[email protected]> Tue, 7 Jan 2014 11:42:26 -0800
| Newsgroups | gmane.os.netbsd.ports.next68k |
|---|---|
| Message-ID | <[email protected]> |
Sounds like you've narrowed it down to a software issue. Although the hardware is known to have imperfections, as well as a large discrepancy between the battery-powered RTC and the running timer, it seems like at least some builds can keep a decent clock. Now, if only you could merge the working SCSI support with the working time code! Brian Willoughby Sound Consulting On Jan 7, 2014, at 00:11, Mouse wrote: > Since writing my list mail, I've tried 1.4T (I forget what pushed > me to - compiler taking a very long time to run maybe?). Under > 1.4T, the drift is much closer to constant. xntpd (1.4T uses > xntpd, not ntpd) showed drift too, but, like ntpd on 4.0.1, it was > large enough that it wouldn't sync; > > Given the differences here, there is clearly some substantial > software difference. Based on the drastic difference in the > drift's variance, I am inclined to blame 4.0.1. For my purposes, > I'm just sticking with 1.4T for now - on this hardware the only > benefit 4.0.1 offers over it for me is SCSI support, which for my > purposes is minor compared to half-decent timekeeping and a usable > compiler - and either just living with the clock drift or, if I get > annoyed enough, bashing the clock tick figure to correct for an > approximation to the mean drift so NTP can take it the rest of the > way.