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Date: Mon, 15 Apr 2002 11:59:40 -0400
From: Kervin Pierre <kpierre@fit.edu>
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To: Eugenio Mastroviti <eugeniom@gointernet.co.uk>
CC: ivan <ivan@es.usyd.edu.au>, linux-kernel@vger.kernel.org
Subject: Re: Memory Leaking. Help!
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Eugenio Mastroviti wrote:
> much data as it can in memory. The actual memory in use (check with 
> 'free') is total-(buffers+cache)= 2.2-(0.37+1.51)GB=about 320 MB, which 

This is interesting.  What exactly is buffers and cache used for?

I had the same issue with the original poster with a new server.  A 
fresh install with nothing significant running ( no bind nor sendmail, 
etc. ) reported that over 450 out of 512 MB was used, but looking at the 
process usage on top I barelly got 5% memory usuage by process.  If the 
above calculation ( memory use = total - buffers - cache ) is correct 
then the memory use drops to ~100 MB.

I guess what's confusing is that total memory usuage is including 
buffers and cache.  If that memory is available to applications, 
shouldn't it be removed from the "total used" figure?

--Kervin


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