From: Yusuf Goolamabbas <yusufg@outblaze.com>
Subject: Re: number of files per directory under ext3 & directory indexing
Date: Tue, 18 Feb 2003 10:54:26 +0800
Sender: nfs-admin@lists.sourceforge.net
Message-ID: <20030218025426.GB1014@outblaze.com>
References: <20030218022449.85354.qmail@web12202.mail.yahoo.com>
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Cc: nfs@lists.sourceforge.net, SteveD@RedHat.com
To: Alan Powell <lakerfaniam2@yahoo.com>
In-Reply-To: <20030218022449.85354.qmail@web12202.mail.yahoo.com>
Errors-To: nfs-admin@lists.sourceforge.net

Alan, as a data-point the htree patch was included in the first beta of
Phoebe (upcoming Redhat version) but removed in the second beta since it
was probably not considered production quality. In a post to ext3-users,
sct says its still not 100% rock-solid

You might want to consider either using XFS for your fileserver or
modifying your directory structure

> 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/).


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