Hi Roman, On Mon, Apr 23, 2018 at 01:36:10PM +0100, Roman Gushchin wrote: > + memory.min > + A read-write single value file which exists on non-root > + cgroups. The default is "0". > + > + Hard memory protection. If the memory usage of a cgroup > + is within its effective min boundary, the cgroup's memory > + won't be reclaimed under any conditions. If there is no > + unprotected reclaimable memory available, OOM killer > + is invoked.
What will happen if all tasks attached to a cgroup are killed by OOM, but its memory usage is still within memory.min? Will memory.min be ignored then? > + > + Effective low boundary is limited by memory.min values of > + all ancestor cgroups. If there is memory.min overcommitment > + (child cgroup or cgroups are requiring more protected memory > + than parent will allow), then each child cgroup will get > + the part of parent's protection proportional to its > + actual memory usage below memory.min. > + > + Putting more memory than generally available under this > + protection is discouraged and may lead to constant OOMs.
