Re: Hybernation and running applications
- From: Derek Broughton <news@xxxxxxxxxxxxxx>
- Date: Sun, 30 Mar 2008 23:15:38 -0300
Arnold Weber wrote:
That would depend on the program (which software are you using?) but I
would expect not. Have you looked at the software documentation to see
if it can handle hibernation?
Huh? Of course it will continue. Hibernation simply stops _everything_,
then saves the state of memory. When it resumes, it restores memory and
starts again. If hibernation works at all, _all_ programs have to work.
It will work for _almost_ all programs. Troubling are programs that rely
on stable network connections (like instant messengers) or programs that
are getting confused if time jumps ahead a few hours at once while running
(but i don't know an example for this category)
Do you have an example in any category? An IM program should simply tell
you it lost the network connection - which it did - but it would be a
pretty poor network app that couldn't properly handle a lost network
connection. The network does get taken down during hibernation (at least
the standard version - I'm not sure about swsusp).
Programs shouldn't have a problem with the time skipping ahead - as Florian
put it, it's just as if it took a very long time to get a time slice.
Programs _do_ frequently react to the time going _backwards_ because that
can mean duplicate timestamps. Dovecot is one app that I use that
automatically terminates its daemon if the time goes backwards by too much
(if it's just a few seconds, it sleeps until the clock catches up). This
actually did cause a problem with hibernation, because my clock actually
gains time when powered off, and network restart runs ntpdate to reset it,
but the solution was simply to ensure that I slewed the time in manageable
steps.
--
derek
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- Re: Hybernation and running applications
- From: Arnold Weber
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