Re: [PATCH 2/7] mm: shrinker: Add a .to_text() method for shrinkers

[Kent Overstreet]

On Thu, Nov 30, 2023 at 11:01:23AM -0800, Roman Gushchin wrote:
> Ok, a simple question then:
> why can't you dump /proc/slabinfo after the OOM?
> 
> Unlike anon memory, slab memory (fs caches in particular) should not be heavily
> affected by killing some userspace task.

Well, currently the show_mem report dumps slab info if unreclaimable
slab usage is over some threshold (50%?). So it already does what you
describe - sometimes.

One of the patches in this series trims that down to make it more
useful; reporting on only the top 10 slabs, by mmeory usage, in sorted
order and with human readable units.