Re: Interesting item came up while working on FreeBSD's pageout daemon

[Rik van Riel <riel@conectiva.com.br>]

On Thu, 21 Dec 2000, Daniel Phillips wrote:
> Matthew Dillon wrote:
> >     My conclusion from this is that I was wrong before when I thought that
> >     clean and dirty pages should be treated the same, and I was also wrong
> >     trying to give clean pages 'ultimate' priority over dirty pages, but I
> >     think I may be right giving dirty pages two go-arounds in the queue
> >     before flushing.  Limiting the number of dirty page flushes allowed per
> >     pass also works but has unwanted side effects.
> 
> Hi, I'm a newcomer to the mm world, but it looks like fun, so I'm
> jumping in. :-)
> 
> It looks like what you really want are separate lru lists for
> clean and dirty.  That way you can tune the rate at which dirty
> vs clean pages are moved from active to inactive.

Let me clear up one thing. The whole clean/dirty story
Matthew wrote down only goes for the *inactive* pages,
not for the active ones...

regards,

Rik
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