What is the main disadvantage of virtual memory?

Related questions

1. What is the purpose of MMAP?
2. What does memory mapped mean?
3. Can virtual memory replace RAM?
4. Is malloc a system call?
5. What do you mean by mapping files into memory in Linux?
6. Is virtual memory faster than RAM?
7. What is Caddr_t?
8. What is the benefit of virtual memory?
9. How is mapping done in virtual memory?
10. What does it mean to map a file?

Tags

1. #system
2. #address
3. #virtual
4. #thrashing
5. #excessive
6. #translations
7. #other
8. #memory
9. #support
10. #disadvantage
11. #require
12. #paging
13. #systems
14. #faults
15. #possibility
16. #hardware
17. #additional