Re: on load control / process swapping

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

On Sat, 12 May 2001, Matt Dillon wrote:

> :Ahhh, so FreeBSD _does_ have a maxscan equivalent, just one that
> :only kicks in when the system is under very heavy memory pressure.
> :
> :That explains why FreeBSD's thrashing detection code works... ;)
>
>     Note that there is a big distinction between limiting the page
>     queue scan rate (which we do not do), and sleeping between full
>     scans (which we do).  Limiting the page queue scan rate on a
>     page-by-page basis does not scale.  Sleeping in between full queue
>     scans (in an extreme case) does scale.

I'm not convinced it's doing a very useful thing, though ;)

(see the rest of the email you replied to)

Rik
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