Re: [PATCH v3 5/5] slab: make more slab management structure offthe slab

[David Rientjes]

On Mon, 2 Dec 2013, Joonsoo Kim wrote:

> Now, the size of the freelist for the slab management diminish,
> so that the on-slab management structure can waste large space
> if the object of the slab is large.
> 
> Consider a 128 byte sized slab. If on-slab is used, 31 objects can be
> in the slab. The size of the freelist for this case would be 31 bytes
> so that 97 bytes, that is, more than 75% of object size, are wasted.
> 
> In a 64 byte sized slab case, no space is wasted if we use on-slab.
> So set off-slab determining constraint to 128 bytes.
> 
> Acked-by: Christoph Lameter <cl@xxxxxxxxx>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>

Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
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