Re: [PATCH 2/3] xvmalloc memory allocator

[Christoph Lameter]

On Fri, 20 Mar 2009, Nitin Gupta wrote:

> > Maybe try a fair test instead of relying on kmalloc rounding up to
> > the next power of 2 size?
> >
>
> Okay, for testing, I will make some wrappers around SLOB that directly use
> slob_alloc() to avoid any of this rounding-off. I hope to show some data on
> this soon. But considering other SLOB issues, this should not, hopefully,
> be a blocker for compcache.

SLOB is not rounding off. SLAB/SLUB are. You need to create custom
kmem_caches for this.

> I think, with a bit playing around with interfaces, it can be turned into
> general purpose allocator (this will most probably lack highmem support).

Then it would need to implement the SLAB api (see include/linux/slab.h).
Thus we are getting slab allocator #5.

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