[$] Android memory management

The Android system is designed to provide a responsive user experience on
systems that, in a relative sense at least, have limited amounts of
CPU and memory. Doing so requires a number of techniques, including
regular use of
a low-memory process killer, that are not seen elsewhere. In a
memory-management-track session at the 2019 Linux Storage, Filesystem, and
Memory-Management Summit, Suren Baghdasaryan covered a number of issues
related to how Android ensures that interactive processes have enough
memory to get their jobs done.