On Mon, 23 Dec 2019, Andrew Morton wrote:
> Guys, did we make recent changes in this area?
Yes the cgroup folks did. f.e.
commit 04f768a39d55967246c002aa66b407b3bfdd8269
Author: Waiman Long <longman@xxxxxxxxxx>
Date: Mon Sep 23 15:33:46 2019 -0700
mm, slab: extend slab/shrink to shrink all memcg caches
Currently, a value of '1" is written to /sys/kernel/slab/<slab>/shrink
file to shrink the slab by flushing out all the per-cpu slabs and free
slabs in partial lists. This can be useful to squeeze out a bit more
memory under extreme condition as well as making the active object
counts
in /proc/slabinfo more accurate.
This usually applies only to the root caches, as the SLUB_ME
