On Monday 13 March 2006 21:06, Pavel Machek wrote:
> On Ne 12-03-06 22:32:28, Andreas Mohr wrote:
> > And... well... this sounds to me exactly like a prime task
> > for the newish swap prefetch work, no need for any other
> > special solutions here, I think.
> > We probably want a new flag for swap prefetch to let it know
> > that we just resumed from software suspend and thus need
> > prefetching to happen *much* faster than under normal
> > conditions for a short while, though (most likely by
> > enabling prefetching on a *non-idle* system for a minute).
>
> Yep, that would be nice. We are actually able to save up-to half of
> pagecache, so situation is not as bad as it used to be.
I would be happy to extend swap prefetch's capabilities to improve resume. It
wouldn't be too hard to add a special post_resume_swap_prefetch() which
aggressively prefetches for a while. Excuse my ignorance, though, as I know
little about swsusp. Are there pages still on swap space after a resume
cycle?
Cheers,
Con
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