[InclinedPlane]

> One thing that drives me nuts is how frequently monitoring agents/dashboards report and graph only free memory on Linux, which gives misleading results. It's fine to report it, but to make sense of it, you have to stack free memory along with cached and buffered memory, if you care about what's actually available for applications to use.

Even that is misleading. It's actually non-trivial to find out exactly how much "freeable" memory one has on a linux system these days as not all the cached memory bits are truly freeable.