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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