[MC] When a system detects that it is thrashing, one thing that it can do to improve performance is reduce the amount of multiprogramming.

A computer thrashes because there is not enough physical memory to store each process's working set of pages in physical memory. By swapping a process out onto disk, thus reducing the number of processes loaded in memory, the operating system makes more physical pages available for the processes that are left in memory.

Eventually, another process will need to be swapped out and a process swapped in to allow all processes to run.