Re: Swap

So, what you say is if you don't have, you can't hibernate?

2016-02-04 15:49 GMT-03:00 Bennett Piater <[email protected]>:

> > I am curious: why and how?  IIUC, neither suspend nor hibernate use
> > swap.  Or have I misunderstood?
> >
> > Hibernate, in particular, saves everything to disk so RAM should not be
> > an issue.  I could see, maybe, how suspend may need some swap, mind you,
> > as it does use RAM but very little over and above what is currently
> > being used by the running programs?
>
> You misunderstood something.
>
> Hibernate does need swap, because hibernate means that *the entire
> content of your RAM is saved in the swap* and reloaded from there when
> power resumes.
>
> Suspend OTOH does not need swap, because the state is kept in RAM.
> That's why suspend needs a little bit of power: RAM needs powe, or it
> will loose it's memory.
>
> Cheers,
> Bennett
>
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