The program using all the memory here is Chrome (or Firefox). It has more information about what is going on than the kernel does. It should be smarter about m

The program using all the memory here is Chrome (or Firefox). It has more information about what is going on than the kernel does. It should be smarter about memory use when it is trying to consume more memory than is available. Perhaps it could page out background tabs to disk or something similar if memory is low.