- SREcon25 Americas - Lies Programmers Believe about Memory: Resident memory in top can be misleading. It only looks at a particular kind of memory - eg no o/s buffers and caches which are important sometimes and can’t just be evicted when there’s memory pressure. Cgroups v2 have exposed more detailed information about process memory usage and that data can be surprising! Facebook has a tool that caps memory usage (including different kinds of memory) and dynamically adjusts to help a workload run efficiently.
