self doubt

Question

how to decide maximum limit of virtual address space ? is it max disk space available?

Comments

maximum virtual address space possible is limited by amount of secondary storage.

https://blogs.msdn.microsoft.com/ericlippert/2009/06/08/out-of-memory-does-not-refer-to-physical-memory/

Answer 1

• Virtual memory upper limits are set by the OS:
  • for example, on 32-bit Windows the limit is 16TB, and on 64-bit Windows the limit is 256TB.
• Virtual memory is also physically limited by the available disc space.

Answer 2

Your Hard disk or secondary memory is of say 1TB and let say each process is of 1B so you will have 1trilion process not more than that so max virtual memory is dependent on secondary memory size

Virtual memory $\leq$ Secondary strorage capacity