[coyotos-dev] coyotos.sleep, sleepTill, the epoch

[Jonathan S. Shapiro]

On Thu, 2007-02-08 at 19:58 +0100, Valerio Bellizzomi wrote:
> On 07/02/2007, at 21.53, Jonathan S. Shapiro wrote:
> 
> >On Thu, 2007-02-08 at 00:06 +0100, Valerio Bellizzomi wrote:
> >> On 07/02/2007, at 17.37, Jonathan S. Shapiro wrote:
> >
> >> >Since we don't report uptime, we don't track it anywhere. There is no
> >> >notion of counting uptime at all. I'm confused by the question.
> >> 
> >> Why are you confused?  is there any means to know how long the machine
> >has
> >> been up ?
> >
> >Nothing in the kernel or the boot mechanism provides any support for
> >this. There will probably be some mechanism to be notified of restarts,
> >and this can be used to implement uptime at user level.
> 
> This is no problem. All that is needed to implement uptime is a record of
> startup time+date, the counting can be implemented at user level, it as
> simple as subtracting startup time from current time.

We are converging, but not quite converged.

Recording the startup time and date is not necessary either. When the
uptime tracker is notified of restart, it simply fetches the time of day
at that time.

By capturing reboot time in the bootstrap, you are trying to impose
precision on something inherently imprecise. The only reason to capture
it that early is marketing numbers, and if your machines are down often
enough that this small difference helps I think you have other problems.

shap
-- 
Jonathan S. Shapiro, Ph.D.
Managing Director
The EROS Group, LLC
+1 443 927 1719 x5100