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SubjectRe: + fix-spellings-of-slab-allocator-section-in-init-kconfig.patch added to -mm tree
On Wed, May 09, 2007 at 01:32:20AM +0100, Alan Cox wrote:
> > (without SLAB emulation) and fragmentation was not the driving force
> > for replacement. Small Linux 1.x machines frequently had uptimes of 1+
> > years without fragmenting to death. Instead, it was performance with
>
> 8MB for a bit over 3 years.... (1.2.13lmp)
>
> The fragmentation issue I think is overbaked. A lot of the academic work
> argues that there is pretty much no long term difference between first
> fit, best fit, and most of the clever algorithms (obviously stupid ones
> like "take the middle out of the biggest space allocator" do perform
> worse). For MMUless boxes fragmentation is a big issue but not for normal
> systems.

Further, the received wisdom that fragmentation of SLAB-like systems
is better is not above doubt. Our own issues with dcache fragmentation
suggest it's far from perfect.

--
Mathematics is the supreme nostalgia of our time.
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