Re: [patch 09/10] Remove the SLOB allocator for 2.6.23

Christoph Lameter wrote:

On Tue, 10 Jul 2007, Nick Piggin wrote:

O(n) memory savings? What is that?

Allocate n things and your memory waste is proportional to n (well that's
O(n) waste, so I guess by savings I mean that SLOB's memory saving compared
to SLUB are proportional to n).

n is the size of the object?

n things -- n number of things (n calls to kmem_cache_alloc()).

Just a fancy way of saying roughly that memory waste will increase as
the size of the system increases. But that aspect of it I think is
not really a problem for non-tiny systems anyway because the waste
tends not to be too bad (and possibly the number of active allocations
does not increase O(n) with the size of RAM either).

--
SUSE Labs, Novell Inc.
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