Messages in this thread | | | Date | Mon, 2 Jul 2001 15:42:07 -0300 (BRST) | From | Rik van Riel <> | Subject | Re: VM Requirement Document - v0.0 |
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On Thu, 28 Jun 2001, Marco Colombo wrote:
> I'm not sure that, in general, recent pages with only one access are > still better eviction candidates compared to 8 hours old pages. Here > we need either another way to detect one-shot activity (like the one > performed by updatedb),
Fully agreed, but there is one problem with this idea. Suppose you have a maximum of 20% of your RAM for these "one-shot" things, now how are you going to be able to page in an application with a working set of, say, 25% the size of RAM ?
If you don't have any special measures, the pages from this "new" application will always be treated as one-shot pages and the process will never be able to be cached in memory completely...
Rik -- Virtual memory is like a game you can't win; However, without VM there's truly nothing to lose...
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