Linux - Explain how the Kernel handles both the page stealer and the fault handler

Explain how the Kernel handles both the page stealer and the fault handler.

When the memory shortage occurs then the page stealer and fault handler thrashes. The fault handler will be slept when the sum of the working sets of all the processes is more than the physical memory. The system throughput reduction is the restult of this process, because the time spent by kernel for the overhead is too much. The memory is rearraged in the frantic pace.