From: Alan Powell <lakerfaniam2@yahoo.com>
Subject: number of files per directory under ext3 & directory indexing
Date: Mon, 17 Feb 2003 18:24:49 -0800 (PST)
Sender: nfs-admin@lists.sourceforge.net
Message-ID: <20030218022449.85354.qmail@web12202.mail.yahoo.com>
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To: nfs@lists.sourceforge.net, SteveD@RedHat.com
Errors-To: nfs-admin@lists.sourceforge.net

Can you share your experiences of when performance
starts dropping dramatically based on the number of
files in a directory under ext3? (assuming that you
haven't applied any directory indexing patch)

I had always thought that ext3 performed well with a
large number of files per directory, but apparently
directory indexing, which would substantially improve
performance of large directories, has yet to be added
to the kernel (submitted patch:
http://lwn.net/Articles/11481/).

We're not too keen in our company to put cutting-edge
patches into production, but we have a major
performance issue, b/c we have a bottleneck on our
highly trafficked NFS server: 246 directories, each
containing about 14,000 JPG files with an average size
of about 30Kb. So that brings me back to my original
question in the email... Thanks!


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