Re: [PATCH] procfs: provide slub's /proc/slabinfo

[Christoph Lameter]

On Sat, 5 Jan 2008, Pekka J Enberg wrote:

> So, I have this silly memory profiler derived from the kleak patches by 
> the relayfs people and would love to try it out on an embedded workload 
> where SLUB memory footprint is terrible. Any suggestions?

Good idea. But have you tried to look at slabinfo?

Try to run

	slabinfo -t

which will calculate the allocation overhead of the currently allocated 
objects in all slab caches.

One problem: The actual size of kmalloc'ed objects is not available so it 
does not calculate the overhead that comes about because of rounding. Your 
approach would cover that as well but I think we could also add a debug 
mode in which we store the actual size of a kmalloc object and export the 
information via sysfs. Would be nicer than adding this whole additional 
layer.

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