Determining Physical and Virtual Memory At Runtime In C

Fri Apr 14 16:32:00 GMT 2006

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On Fri, 14 Apr 2006 08:41:39 -0700 (PDT)
Jonathan Schreiter <> wrote:

> Hi,
> Can anyone point me in the direction on a relatively
> simple way to determine the amount of physical memory
> and virtual memory available on a system at runtime? 
> I'd like to be able to determine each value
> independently, not the sum of both (total available
> memory).  
> I'd like to differentiate between the two in a c
> program (gcc 4) in x86_64 linux (although that
> shouldn't matter).  
> Memalloc works fine, but performance slows down if
> large arrays allocate in the upper paging file memory.
>  I'd like to be able to split up calculations relative
> to the available memory results returned.
> Any help would be greatly appreciated.
> Thanks,
> Jonathan

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