Re: making kmem more efficient

[Eduardo Horvath <eeh%NetBSD.org@localhost>]

On Thu, 1 Mar 2012, Lars Heidieker wrote:

> Hi,
> 
> this splits the lookup table into two parts, for smaller allocations and
> larger ones this has the following advantages:
> 
> - smaller lookup tables (less cache line pollution)
> - makes large kmem caches possible currently up to min(16384, 4*PAGE_SIZE)
> - smaller caches allocate from larger pool-pages if that reduces the wastage
> 
> any objections?

Why would you want to go larger than PAGE_SIZE?  At that point wouldn't 
you just want to allocate individual pages and map them into the VM space?

Eduardo