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Re: Another question about self-paging
From: |
Jonathan S. Shapiro |
Subject: |
Re: Another question about self-paging |
Date: |
Sun, 30 Oct 2005 13:19:10 -0500 |
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
Re: Another question about self-paging, Bas Wijnen, 2005/10/30