Re: Major regression on hackbench with SLUB (more numbers)

[Andi Kleen]

On Fri, Dec 21, 2007 at 08:19:42PM -0600, Matt Mackall wrote:
> 
> On Sat, 2007-12-22 at 01:28 +0100, Andi Kleen wrote:
> > Ingo Molnar <mingo@xxxxxxx> writes:
> > 
> > > Christoph, /proc/slabinfo is an _ABI_. You HAVE to provide it. slabtop 
> > > relies on it, people use it every day to monitor memory consumption.
> > 
> > It's definitely not a stable ABI. slabtop tends to exit without any
> > error message on any slabinfo version number increase and I've seen
> > that happen several times in not so old kernels.
> > 
> > Requiring just another slabtop update isn't really a big deal.
> 
> Might as well mention that SLOB also doesn't provide this functionality,
> nor would it make any sense for it to try (because there are no
> slab-like objects to report about).

% slabinfo
Name                   Objects Objsize    Space Slabs/Part/Cpu  O/S O %Fr %Ef Flg
...
anon_vma                  1551      24    81.9K        20/18/2  128 0  90  45

Seems certainly like information that slabtop could report, even if it's
not exactly the same.

-Andi
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