[Voyage-linux] will my application fit?

[Ben Kochie]

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51 MB, the way linux uses memory is a bit more complicated than you might 
think.  There are many different ways memory can be "used".  The Linux 
kernel allocates as much ram as it can to "pagecache".  This is what 
caches reads and writes to disk (for the most part).  This makes it very 
fast and use the disk IO less often.

Program memory use is also complicated by the fact that memory can be 
shared between applications in a number of ways, mostly through 
shared libraries.

- -ben

  "UNIX is user-friendly, it's just picky about its friends."

On Thu, 19 Mar 2009, Jeff Ramin wrote:

> 
> Yes the buffers line from free -m shows the amount of memory used.
> voyage:~# free -m
>               total       used       free     shared    buffers     cached
> Mem:           123        116          7          0          0         43
> 
> -/+ buffers/cache:         72         51
> Swap:            0          0          0
> --------------------------------------------------------------------
> Thanks Sam!
> Just to be perfectly clear - given your example above, does
> 
> the system currently have 51 MB free, or 58 MB (51 + 7) free?
> 
>
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