Date: Wed, 24 Nov 2004 17:48:58 +0000 (GMT)
From: Hugh Dickins <hugh@veritas.com>
To: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
cc: Nick Warne <nick@linicks.net>, <linux-kernel@vger.kernel.org>
Subject: Re: 2.4.28 -> ch..ch...changes....
In-Reply-To: <20041124070821.GA8718@logos.cnet>
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On Wed, 24 Nov 2004, Marcelo Tosatti wrote:
> On Tue, Nov 23, 2004 at 09:36:36PM +0000, Nick Warne wrote:
> > 
> > I updated three boxes today to 2.4.28 (from .27), one at work, and two here at 
> > home (Redhat 7.1+, Slackware 10)
> > 
> > I am intrigued terribly by the small footprint of memory usage now.  I have 
> > gone through the changes file, but can really see nothing (to me, a n00b) 
> > that would alter that?
> > 
> > Can anyone enlighten me?
> 
> What do you mean by "memory usage"? SLAB (/proc/slabinfo) buffers
> or pagecache ?
> 
> Whats your workload and what drivers are you using ?
> 
> Nothing that I am aware of explains this.

_If_ it's a reduction in /proc/slabinfo's dentry_cache, and
_if_ these boxes do a lot of removing files from tmpfs,
then it would be the "tmpfs: stop negative dentries".

Hugh

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