Big allocation AND per process memory!

Hi EveryOne!

0 See [
formatting link

] what MS guy is talking about memory allocation , i wonder that they say that process address space can be 4 GB [ 32 bit architecture ] memory with one half for kernel and another for user. Ok! lets say that

you can just use 2 GB with any user application , fine. If i write a kernel mode code which can access user and as well as kernel space then

it should be able to take care of 4 GB. But why Microsoft guys are just

saying NO for big allocations?

It might be possible that lack of addressing flat memory is due to other than OS itself like TLB , HW cache , VM manager architecture etc..


Say Windows 32 bit OS for intel architecture.

0) Kernel space = 2 1) User space = 2

Total process space = 4 GB.

User mode App. = You have just 2 GB to move around , you keep you data,

routines and string for file mapping here.

Kernel mode code = Ok here you can move around 3 GB.

You can see that our system is consuming min 1 GB [PCB , stack etc.] in

both cases. So we can see that system is spoiling 4 GB [ one process] for every four processes;-)

that is what i'm thinking.



Reply to
Loading thread data ...

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.