Re: boot time on Linux

[Natanael Copa]

On Thu, 10 Aug 2023 17:38:10 +0800
Po Lu <luangruo@yahoo.com> wrote:

> Natanael Copa <natanael.copa@gmail.com> writes:
> 
> > 2) Even if it does exist, there is no guarantee that the timestamp is
> > correct. There are machines without RTC (Raspberry PI for example),
> > and in this case the time stamp may end up to be the same every reboot
> > (if correctly set up it should save the shutdown time for the reboot
> > and set time to this on next boot, but there is no guarantee).  
> 
> If so, doesn't that discount the possibility of deriving the boot time
> from the timestamp of any particular file?  Since AFAIU these machines
> lacking a TOY clock are relatively widespread?

That was sort of my point. It is better to avoid if possible. In emacs
case I believe it is.

-nc