Re: [PATCH 0/4] PM: Drop shrink_all_memory (rev. 2) (was: Re: [PATCH 3/3] PM/Hibernate: Use memory allocations to free memory)

Pavel Machek
2009-05-04T09:33:10Z

Hi!

> I know that swsusp_shrink_memory() has problems, that's why I'd like to get rid
> of it.
>
> > I wonder if it's possible to free up the memory within 1s at all.
>
> I'm not sure.
>
> Apparently, the counting of saveable pages takes substantial time (0.5 s each
> iteration on my 64-bit test box), so we can improve that by limiting the number
> of iterations.

We could increase step size after each step. Free in 40MB step, then
80MB step, then 160MB step, ...
Pavel
--
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