Re: [MODSLAB 0/7] A modular slab allocator V1

[David Chinner]

On Wed, Aug 16, 2006 at 03:41:19AM -0500, Matt Mackall wrote:
> On Wed, Aug 16, 2006 at 09:52:54AM +0200, Andi Kleen wrote:
> > > 1. shrink_slab takes a function to move object. Using that
> > >    function slabs can be defragmented to ease slab reclaim.
> > 
> > Does that help with the inefficient dcache/icache pruning? 
> 
> There was a fair amount of debate on this at the VM summit.
> 
> The approach we thought was most promising started with splitting the
> dcache into directory and leaf entries.

That's been tried before with no noticable effect on fragmentation.
Patch:

http://marc.theaimsgroup.com/?l=linux-mm&m=112858024817277&w=2

And informative thread:

http://marc.theaimsgroup.com/?l=linux-mm&m=112660138015732&w=2

Cheers,

Dave.
-- 
Dave Chinner
Principal Engineer
SGI Australian Software Group
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