From mboxrd@z Thu Jan  1 00:00:00 1970
From: Boyd Waters <waters.boyd@gmail.com>
Subject: Re: btrfs and 1 billion small files
Date: Mon, 7 May 2012 04:06:46 -0600
Message-ID: <9EC89864-505F-4821-90F9-389B8C65C4F2@gmail.com>
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Cc: Alessio Focardi <alessiof@gmail.com>
To: "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
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Use a directory hierarchy. Even if the filesystem handles a flat structure effectively, userspace programs will choke on tens of thousands of files in a single directory. For example 'ls' will try to lexically sort its output (very slowly) unless given the command-line option not to do so.

Sent from my iPad

On May 7, 2012, at 3:58 AM, Hubert Kario <hka@qbs.com.pl> wrote:

> I'm not sure about limits to size of directory, but I'd guess that going over 
> few tens of thousands of files in single flat directory will have speed 
> penalties