Re: [patch 1/3] slob: rework freelist handling

[Nick Piggin <npiggin@suse.de>]

On Wed, May 23, 2007 at 08:17:02AM +0200, Nick Piggin wrote:
> On Tue, May 22, 2007 at 10:28:54PM -0700, Christoph Lameter wrote:
> > On Wed, 23 May 2007, Nick Piggin wrote:
> > 
> > > > This is intended for distro kernels so that you will not have to rebuild 
> > > > the kernel for slab debugging if slab corruption occurs.
> > > 
> > > OIC, neat. Anyway, the code size issue is still there, so I will
> > > test with the fix instead.
> > 
> > A code size issue? You mean SLUB is code wise larger than SLOB?
> 
> 
> That's what the numbers I just posted earlier indicate, yes.
> 
> If you want to do a memory consumption shootout with SLOB, you need
> all the help you can get ;)
> 
> OK, so with a 64-bit UP ppc kernel, compiled for size, and without full
> size data structures, booting with mem=16M init=/bin/bash.
> 
> 2.6.22-rc1-mm1 + your fix + my slob patches.
> 
> After booting and mounting /proc, SLOB has 1140K free, SLUB has 748K
> free.

Oh, and just out of interest, SLOB before my patches winds up with
1068K free, so it is good to know the patches were able to save a bit
on this setup.

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