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Date: Wed, 21 Feb 2001 18:41:24 -0800
From: "H. Peter Anvin" <hpa@transmeta.com>
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To: Andreas Dilger <adilger@turbolinux.com>
CC: Daniel Phillips <phillips@innominate.de>,
        Linux-Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [rfc] Near-constant time directory index for Ext2
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Andreas Dilger wrote:
> 
> Basically (IMHO) we will not really get any noticable benefit with 1 level
> index blocks for a 1k filesystem - my estimates at least are that the break
> even point is about 5k files.  We _should_ be OK with 780k files in a single
> directory for a while.
>

I've had a news server with 2000000 files in one directory.  Such a
filesystem is likely to use small blocks, too, because each file is
generally small.

This is an important connection: filesystems which have lots and lots of
small files will have large directories and small block sizes.

	-hpa

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