[$] Memory management for 400Gb/s interfaces

Christoph Lameter has spent years improving Linux for high-performancecomputing tasks. During the memory-management track of the 2019 LinuxStorage, Filesystem, and Memory-Management Summit, he talked about theproblem of keeping up with a 400Gb/s network interface. At that speed,there simply is no time for the system to get its work done. Some ways ofimproving the situation are in sight, but it's a hard problem overall and,despite some progress, the situation is getting worse.