If we do so, the system will then reserve 3GB for user applications, and 1 GB for the kernel. ![]() This behavior can be overridden by using the “/3gb” flag in the Windows boot.ini config file. Why?īecause on 32 bits systems, Windows splits the virtual address space into two equal parts: one for User Mode applications, and another one for the Kernel (system applications). But even having those 4GB available on the system, your application will actually be able to see 2GB only. Needless to say that 2^32 will give you a virtual address space with 4.294.967.296 different entries, and that’s precisely where the 4GB limit comes from. Your application will face several issues that will limit the actual memory available for it.įor instance, a 32 bit system cannot have more than 4 GB of physical memory. ![]() We will also give some tips about dealing with the problems you will face when reaching those limits.Īs you already know, no matter how much physical memory you install in a computer. ![]() Net memory management and about the memory limits both the Runtime and the platform establish for each process. This article tries to be an introduction on.
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