Messages in this thread | | | Subject | Re: [PATCH] 2.2.17pre7 VM enhancement Re: I/O performance on 2.4.0-test2 | From | "Juan J. Quintela" <> | Date | 12 Jul 2000 00:49:40 +0200 |
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>>>>> "roger" == Roger Larsson <roger.larsson@norran.net> writes:
Hi
roger> Problem is that you have to age all pages, at some point the newly read roger> pages will be older than the almost never reused ones.
The almost never reused pages is ok for them to go to swap, they are good candidates, i.e. candidates to go to swap: 1- unused pages 2- almost unused pages
roger> Note: You can not avoid ageing all pages. If not an easy attack would be roger> to reread some pages over and over... (they would never go away...)
I wast to age all the pages. That is not an attack, how do you differentiate a program that touches its pages from that. It is ok to do that.
Later, Juan.
-- In theory, practice and theory are the same, but in practice they are different -- Larry McVoy
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