Re: How to get a sense of VM pressure

Jeremy Fitzhardinge
2008-07-28T08:12:41Z

Peter Zijlstra wrote:
> Have a peek at this:
>
> http://people.redhat.com/~riel/riel-OLS2006.pdf
>
> The refault patches have been posted several times, but nobody really
> tried to use them for your problem.
>

Yep, Rik pointed the paper and patches out to me. Seems like an
interesting approach to play with. The refaulting measure is nice
because it should give a fairly good idea of how much memory you need to
add to get the fault rate down below some particular level. It doesn't
help with shrinking, other than telling you you've gone too far, and how
much too far, which is definitely useful to know.

J