linux-kernel - Re: [RFC] Limit the size of the pagecache

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Message-ID: <Pine.LNX.4.64.0701241841000.12325@schroedinger.engr.sgi.com>
Date:	Wed, 24 Jan 2007 18:41:27 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
cc:	aubreylee@...il.com, svaidy@...ux.vnet.ibm.com,
	nickpiggin@...oo.com.au, rgetz@...ckfin.uclinux.org,
	Michael.Hennerich@...log.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC] Limit the size of the pagecache

On Thu, 25 Jan 2007, KAMEZAWA Hiroyuki wrote:

> On Wed, 24 Jan 2007 14:15:10 +0900
> KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:
> 
> >   And...some customers want to keep memory Free as much as possible.
> >   99% memory usage makes insecure them ;)
> > 
> If there is a way that the "free" command can show "never used" memory,
> they will not complain ;).
> 
> But I can't think of the way to show that.
> ==
> [kamezawa@...rks src]$ free
>             total       used       free     shared    buffers     cached
> Mem:        741604     724628      16976          0      62700     564600
> -/+ buffers/cache:      97328     644276
> Swap:      1052216       2532    1049684
> ==

Could we call the free memory "unused memory" and not talk about free 
memory at all?
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