From: Chuck Campbell <campbell@accelinc.com>
To: Luca Ferrari <fluca1978@virgilio.it>
Cc: linux-admin@vger.kernel.org
Subject: Re: disk fragmentation
Date: Mon, 26 Apr 2004 12:08:57 -0500 [thread overview]
Message-ID: <20040426170857.GA5966@helium.inexs.com> (raw)
In-Reply-To: <200404261018.35979.fluca1978@virgilio.it>
On Mon, Apr 26, 2004 at 10:18:35AM +0200, Luca Ferrari wrote:
> Hi,
> I've got a simple question about disk use under windows and unix. While
> windows sometimes requires a de-fragmentation of the disk, it seems as Linux
> (and even Unix) does not. I believe this is due to a better defragmentation
> alghoritm, but I'm not sure. Is there a daemon which does this transparently
> or what?
No,
Unix file systems, in general, are designed to have less performance issues
from fragmentation. They aren't as susceptible inherently to fragmentation
problems. As a result, there aren't any defrag tools around that I know of.
You can always build your own. A backup to tape will sequence all the files
contiguously on tape/disk, and a subsequent restore will put them back
that way.
If you bother, do some benchmarks for a particular file i/o before and after
and I doubt you'll see much difference, unless your disk is very, very nearly
full.
-chuck
next prev parent reply other threads:[~2004-04-26 17:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-26 8:18 disk fragmentation Luca Ferrari
2004-04-26 17:08 ` Chuck Campbell [this message]
2004-04-26 17:25 ` Ahsan Ali
2004-04-26 18:42 ` Yu Chen
2004-04-26 21:48 ` Chuck Campbell
2004-04-27 13:07 ` Yu Chen
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