Re: [PATCH] patch-slab-split-03-tail

Andrew Morton (akpm@digeo.com)
Fri, 04 Oct 2002 12:15:06 -0700


"Martin J. Bligh" wrote:
>
> > Run that by me again? So we're saying "if we just freed an
> > object from this page then make this page be the *last* page
> > which is eligible for new allocations"? Under the assumption
> > that other objects in that same page are about to be freed
> > up as well?
> >
> > Makes sense. It would be nice to get this confirmed in
> > targetted testing ;)
>
> Just doing my normal boring kernel compile suggest Manfred's
> last big rollup performs exactly the same as without it. Not
> sure if that's any help or not ....
>

Well. This patch is supposed to decrease internal fragmentation.
We need to prove that theory. An appropriate test would be:

- boot with `mem=48m'
- untar kernel
- build kernel
- capture /proc/slabinfo

- apply patch

- repeat

- compare and explain.

I know what your reboot times are like ;) I'll do it.
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