On Tue 20-04-21 15:57:08, Michal Hocko wrote: [...] > Usual memory consumption is usually something like LRU pages + Slab > memory + kernel stack + vmalloc used + pcp. > > > But I know that KernelStack is allocated through vmalloc these days, > > and I don't know whether VmallocUsed includes KernelStack or whether I > > can sum them. Similarly, is Mlocked a subset of Unevictable? Forgot to reply to these two. Yes they do. So if we want to be precise then you have to check the stack allocation configuration. There are just so many traps lurking here. Something you get used to over time but this is certainly far far away from an ideal state. What else we can expect from an ad hoc approach to providing data to userspace that was historically applied to this and many other proc interfaces. We are trying to be strict for some time but some mistakes are simply hard to fix up (e.g. accounting shmem as a page cache to name some more). -- Michal Hocko SUSE Labs
