Re: Maximum file size?

[Guy Harris <guy () alum mit edu>]

On Oct 27, 2009, at 9:35 PM, Joel Seidman wrote:

> Thank you for your response. Since I'm on a 64-bit computer I was  
> hoping
> that 2 would not be an issue, but it appears it is.

The size of a pointer is not the only limitation on the amount of data  
an application can allocate - "anonymous" pages (pages that don't  
permanently live in a file, such as stack pages and pages allocated by  
the standard memory allocator) have to have *something* backing them  
up when they're not in main memory; that's what a swap partition (on  
many UN*Xes) or the swap files/page files (some UN*Xes, such as Mac  
OS, and Windows) are for.

If, for example, you have a swap partition, and you attempt to  
allocate more virtual memory in a process than will fit in main memory  
+ the swap partition, that attempt will fail.
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