RE: Correctly determine amount of "free memory"

[Gregory Giguashvili]

Experimenting with my simple memory allocation program for little more
time, I found that Free=MemTotal-Active gives kind of rough
approximation to the "free" memory amount. Can I make it somehow better?

What about SwapCached or Inact_target? Are there any pointers to the
information I might find useful on this subject other than
http://www.redhat.com/advice/tips/meminfo.html?

Thanks 
Giga
P.S. I need this to work with 2.4.19+ and 2.6 kernels...
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