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.
