Virtual Address

[dayananda.ms]

Hi All,

I have some basic clarifications regarding virtual address. Can somebody explain in terms of theory as well as program part?

1) I want to find out the range of virtual address support my machine? Means limit for virtual address.

2) I want to find out how much virtual address (Virtual memory) is used in my system?

3) I want to know how virtual address space is left in my current execution process or how much space is left for my process?

[gerard4143]

well that depends do you have a 32-bit machine or 64-bit machine....

if you have a 32-bit the virtual address available is 2^32 and if you have a 64-bit machine its 2^43(I'd check this one but I'm pretty sure its 2^43).

to get the splits for a user processes(that is kernel/user) i would check your ptable.h values...

plus here's a good link to start you on your way...

Explore the Linux memory model