On Mon, 13 Feb 2006, Christoph Lameter wrote:
spare ram when swapping??? We are already under memory pressure. Why make
it worse by getting rid of the few bits of available memory? If a system
swaps then we are per definition in the bad performance range. Add more
memory.
when a program exits it's memory is now free, rather then just waiting
until something uses this memory up normally, this patch attempts to fill
that memory with things that are expected to be useful (things that were
swapped out)
this won't be a win in all cases by any means, but if it uses disk
bandwidth that would otherwise be idle and memory that is empty (and is at
the tail of the LRU list so it's the first to be thrown away) the cost of
doing this should be close to zero.
David Lang
--
There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. And the other way is to make it so complicated that there are no obvious deficiencies.
-- C.A.R. Hoare
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