Re: Another question about self-paging

[Jonathan S. Shapiro]

On Sun, 2005-10-30 at 19:08 +0100, ness wrote:
> [1] is about application controlled file caching. It is pretty clear 
> that one program alone mustn't decide whether a cache may be freed, as 
> this would eventually reduce other program's cache hit rate.

Yes. The most that an application can say concerning a shared resource
is: "I am no longer interested in this resource and I will no longer pay
for its residency". Whether to remove it is a more global question.

If you frame the problem this way, you will rapidly conclude that the
question of "sponsorship" is extremely complicated, and after a lot of
literature search you will come to the conclusion that something like a
futures market is needed, and that our meat-world understanding of how a
futures market works actually isn't sufficient.

It's a VERY hard and very open problem.

shap