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SubjectRE: About _real_ free memory
Date
If a process tries to allocate and use more than the really free
amount, some cache will be dropped automatically. From a performance
point of view, this could of course be undesirable, but normally
there's no need to think about it.

<Why don't we have a command to drop some cache ? or maybe some
<kernel rules to do it ? we could gain some more scalability doing that kind
of
<stuff during low load.Another problem is end-user point of view :

< -What's available on a box before swapping ?
< -Do I have to add RAM right now ?

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