This report is kind of late, hope everyone still remembers the context.
I just happened to see a similar problem on our v4.19 kernel, please
see the below output from memory.stat:
total_cache 7361626112
total_rss 8268165120
total_rss_huge 0
total_shmem 0
total_mapped_file 4154929152
total_dirty 3
On Mon 12-08-19 15:29:10, Roman Gushchin wrote:
> Percpu caching of local vmstats with the conditional propagation
> by the cgroup tree leads to an accumulation of errors on non-leaf
> levels.
>
> Let's imagine two nested memory cgroups A and A/B. Say, a process
> belonging to A/B allocates 100 pa
On Tue, Aug 13, 2019 at 02:27:52PM -0700, Andrew Morton wrote:
> On Mon, 12 Aug 2019 15:29:10 -0700 Roman Gushchin wrote:
>
> > Percpu caching of local vmstats with the conditional propagation
> > by the cgroup tree leads to an accumulation of errors on non-leaf
> > levels.
> >
> > Let's imagine
On Mon, 12 Aug 2019 15:29:10 -0700 Roman Gushchin wrote:
> Percpu caching of local vmstats with the conditional propagation
> by the cgroup tree leads to an accumulation of errors on non-leaf
> levels.
>
> Let's imagine two nested memory cgroups A and A/B. Say, a process
> belonging to A/B alloc
Percpu caching of local vmstats with the conditional propagation
by the cgroup tree leads to an accumulation of errors on non-leaf
levels.
Let's imagine two nested memory cgroups A and A/B. Say, a process
belonging to A/B allocates 100 pagecache pages on the CPU 0.
The percpu cache will spill 3 ti
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