Re: How can Emacs get a unique ID per Linux reboot?
H. Peter Anvin (hpa@transmeta.com)
Mon, 31 May 1999 22:12:52 -0700
Richard Gooch wrote:
>
> H. Peter Anvin writes:
> > Richard Gooch wrote:
> > >
> > > H. Peter Anvin writes:
> > > > Get the current uptime from /proc/uptime and subtract that from the
> > > > current time.
> > >
> > > Won't that foul up if the system is suspended (system clock is
> > > restored from hwclock on resume)?
> > > And probably also when settimeofday() is called?
> >
> > No, and yes, respectively.
>
> ??? AFAIK, /proc/uptime stops ticking over when the system is
> suspended. However, since the current time is "restored" after a
> resume, the two values will not track. The computed "boot time" will
> drift forward by as many seconds as the system was suspended.
> Is this not correct?
>
If so, then that's a bug in /proc/uptime IMNSHO.
-hpa
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