Messages in this thread | | | Date | Mon, 31 Jan 2022 12:51:48 -0800 | From | Roman Gushchin <> | Subject | Re: [PATCH v3 3/4] mm/page_owner: Print memcg information |
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On Mon, Jan 31, 2022 at 02:23:07PM -0500, Waiman Long wrote: > It was found that a number of offlined memcgs were not freed because > they were pinned by some charged pages that were present. Even "echo > 1 > /proc/sys/vm/drop_caches" wasn't able to free those pages. These > offlined but not freed memcgs tend to increase in number over time with > the side effect that percpu memory consumption as shown in /proc/meminfo > also increases over time. > > In order to find out more information about those pages that pin > offlined memcgs, the page_owner feature is extended to print memory > cgroup information especially whether the cgroup is offlined or not. > > Signed-off-by: Waiman Long <longman@redhat.com> > Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Thanks!
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