Obviously the usual context of the discussion was server workloads, often a single role servers, like a before mentioned MS SQL. > I suppose the system could w

Obviously the usual context of the discussion was server workloads, often a single role servers, like a before mentioned MS SQL. > I suppose the system could work if there was some mechanism for the OS to demand that a program free up memory, but I haven't seen that in practice. Memory mapped files works exactly like that, IIRC.