Yo Hal! On Fri, 21 Apr 2017 23:22:33 -0700 Hal Murray <[email protected]> wrote:
> One is that there is a tradeoff between building in a long lifetime
> and catching problems during a normal lifetime. I'm not sure which
> is more likely. Consider what happens if a server gets fired up with
> a broken clock and starts answering all requests with 1970. Do you
> want to reject that, or pivot it to 2036?
I'd have ntpd reject any time prior to EPOCH.
> Allow the user to specify the pivot time and/or life time, either
> at build time or at run time or both.
EPOCH is used for NMEA, so that is covered at build time.
I could see adding an option to specify the EPOCH at run time too.
> How long have computers been used in cars? When did they start using
> software complicated enough to support a system time-of-day clock?
> What's their track record for long lifetime bugs?
As mentioend earlier, PDP-8s still run. That is late 1960's. Call it
50 years.
RGDS
GARY
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