컴퓨터의 가상 메모리 리소스가 과도하게 사용되어 페이징 및 페이지 오류가 지속적으로 발생하여 대부분의 응용 프로그램 수준 처리를 방해 할 때 발생
Thrashing (computer science) - Wikipedia
In computer science, thrashing occurs when a computer's virtual memory resources are overused, leading to a constant state of paging and page faults, inhibiting most application-level processing. This causes the performance of the computer to degrade or collapse. The situation can continue indefinitely until either the user closes some running applications or the active processes free up additional virtual memory resources.
https://en.wikipedia.org/wiki/Thrashing_(computer_science)

Seonglae Cho