Re: vmscan.c heuristic adjustment for smaller systems

[Nick Piggin]

Marc Singer wrote:
> On Sun, Apr 18, 2004 at 02:41:12PM +1000, Nick Piggin wrote:
>
> > William Lee Irwin III wrote:
> >
> > > On Sun, Apr 18, 2004 at 01:37:45PM +1000, Nick Piggin wrote:
> > >
> > >
> > > > swappiness is pretty arbitrary and unfortunately it means
> > > > different things to machines with different sized memory.
> > > > Also, once you *have* gone past the reclaim_mapped threshold,
> > > > mapped pages aren't really given any preference above
> > > > unmapped pages.
> > > > I have a small patchset which splits the active list roughly
> > > > into mapped and unmapped pages. It might hopefully solve your
> > > > problem. Would you give it a try? It is pretty stable here.
> > >
> > >
> > > It would be interesting to see the results of this on Marc's system.
> > > It's a more comprehensive solution than tweaking numbers.
> >
> > Well, here is the current patch against 2.6.5-mm6. -mm is
> > different enough from -linus now that it is not 100% trivial
> > to patch (mainly the rmap and hugepages work).
>
>
> Will this work against 2.6.5 without -mm6?

Unfortunately it won't patch easily. If this is a big
problem for you I could make you up a 2.6.5 version.

> As an aside, I've been using SVN to manage my kernel sources.  While
> I'd be thrilled to make it work, it simply doesn't seem to have the
> heavy lifting capability to handle the kernel work.  I know the
> rudiments of using BK.  What I'd like is some sort of HOWTO with
> example of common tasks for kernel development.  Know of any?

Well I don't do a great deal of coding or merging, but I
use Andrew Morton's patch scripts which make things very
easy for me.

Regarding bitkeeper, I have never tried it but there is
some help in Documentation/BK-usage/ which might be of
use to you.
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