I had a question about anon and anon_thp, values that come from memory.stat in cgroups v2. >From this doc https://docs.kernel.org/admin-guide/cgroup-v2.html#memory-interface-files : anon Amount of memory used in anonymous mappings such as brk(), sbrk(), and mmap(MAP_ANONYMOUS) ... anon_thp Amount of memory used in anonymous mappings backed by transparent hugepages I read that as anon_thp being a subset of anon, however it is not explicit. The cgroup v1 documentation was explicit about the "rss" stat including transparent hugepages. I have tested a few memory eating programs (making sure that I have the transparent_hugepages kernel parameter set to "always"), and anon always seems to be bigger than anon_thp by a little. This helps but doesn't definitively prove that anon_thp is a subset of anon. Does anyone know for sure if anon_thp is a subset of anon? Preferable if you can cite the source code. I have dug in the code for a while but have not found the answer. One last related question: Is the cgroups v2 equivalent of "rss" in v1 anon + swapcached? Thank you, Caden
