Re: 2.4.23aa2 (bugfixes and important VM improvements for the highend)

[Mike Fedyk]

Rik van Riel wrote:
> On Fri, 27 Feb 2004, Andrea Arcangeli wrote:
> > > Then again, your stuff will also find pages the moment they're
> > > cleaned, just at the cost of a (little?) bit more CPU time.
> >
> > exactly, that's an important effect of my patch and that's the only
> > thing that o1 vm is taking care of, I don't think it's enough since the
> > gigs of cache would still be like a memleak without my code.
>
>
> ... however, if you have a hundred gigabyte of memory, or
> even more, then you cannot afford to search the inactive
> list for clean pages on swapout. It will end up using too
> much CPU time.
>
> The FreeBSD people found this out the hard way, even on
> smaller systems...

So that's what the inact_clean list is for in 2.4-rmap.

But your inactive lists are always much smaller than the active list on 
the smallish (< 1.5G) machines...
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