[expert] Actual free memory

[Sarang Lakare]

Hi guys,

In Xosview, I see 140Mb memory usage.. which is around 80Mb user+shared and
remaining buff+cache.. this matches with the output of free

but, gtop shows radically high memory usage!!.. it shows 250 Mb total for
resident sizes.. 164Mb for total of shared sizes, 560MB as sum of virtual
sizes... what is all this?? 

I want to find out how much is kde2 using.. and gtop is totally weird in
this regard!

-sarang