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

[Nick Piggin <nickpiggin@yahoo.com.au>]

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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