Re: throttling dirtiers

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

On Wed, 31 Jul 2002, Andrew Morton wrote:

> > First off, make it obvious where we block in the allocation path (pawning
> > off all memory reaping to kswapd et al is an easy first step here).  Then
> > make allocators cycle through on a FIFO basis by using something like the
> > page reservation patch I came up with a while ago.  That'll give us an
> > easy place to change scheduling behaviour.
>
> None of that will preferentially throttle the source of
> dirty pages, which seems a good thing to do?

But it will throttle the page dirtiers we care about, ie. the
ones allocating new memory.

I'm not sure we care too much about re-dirtying pagecache pages;
if that is happening we want to keep those pages resident anyway.

regards,

Rik
-- 
Bravely reimplemented by the knights who say "NIH".

http://www.surriel.com/		http://distro.conectiva.com/

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