From: Tomasz Chmielewski <mangoo@wpkg.org>
To: Ric Wheeler <rwheeler@redhat.com>
Cc: Michael Tharp <gxti@partiallystapled.com>,
Thomas Glanzmann <thomas@glanzmann.de>,
Chris Mason <chris.mason@oracle.com>,
linux-btrfs@vger.kernel.org
Subject: Re: Data Deduplication with the help of an online filesystem check
Date: Mon, 04 May 2009 16:39:35 +0200 [thread overview]
Message-ID: <49FEFE27.5090804@wpkg.org> (raw)
In-Reply-To: <49FEFBE6.40209@redhat.com>
Ric Wheeler schrieb:
> One thing in the above scheme that would be really interesting for all
> possible hash functions is maintaining good stats on hash collisions,
> effectiveness of the hash, etc. There has been a lot of press about MD5
> hash collisions for example - it would be really neat to be able to
> track real world data on those,
See here ("The hashing function"):
http://backuppc.sourceforge.net/faq/BackupPC.html#some_design_issues
It's not "real world data", but it gives some overview which applies here.
--
Tomasz Chmielewski
http://wpkg.org
next prev parent reply other threads:[~2009-05-04 14:39 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-27 3:33 Data Deduplication with the help of an online filesystem check Thomas Glanzmann
2009-04-27 13:37 ` Chris Mason
2009-04-28 5:22 ` Thomas Glanzmann
2009-04-28 10:02 ` Chris Mason
2009-04-28 13:49 ` Andrey Kuzmin
2009-04-28 13:58 ` Chris Mason
2009-04-28 14:04 ` Thomas Glanzmann
2009-04-28 17:21 ` Chris Mason
2009-04-28 20:10 ` Thomas Glanzmann
2009-04-28 20:29 ` Thomas Glanzmann
2009-04-28 13:58 ` jim owens
2009-04-28 16:10 ` Anthony Roberts
2009-04-28 15:59 ` Thomas Glanzmann
2009-04-28 16:04 ` Tomasz Chmielewski
2009-04-28 17:29 ` Edward Shishkin
2009-04-28 17:34 ` Thomas Glanzmann
2009-04-28 17:38 ` Chris Mason
2009-04-28 17:43 ` Thomas Glanzmann
2009-04-28 17:45 ` Heinz-Josef Claes
2009-04-28 20:16 ` Thomas Glanzmann
2009-04-28 20:36 ` Heinz-Josef Claes
2009-04-28 20:52 ` Thomas Glanzmann
2009-04-28 20:58 ` Chris Mason
2009-04-28 21:12 ` Thomas Glanzmann
2009-04-28 21:26 ` Chris Mason
2009-04-28 22:14 ` Thomas Glanzmann
2009-04-28 23:18 ` Chris Mason
2009-04-29 12:03 ` Thomas Glanzmann
2009-04-29 13:11 ` Michael Tharp
2009-04-29 13:14 ` Chris Mason
2009-04-29 13:58 ` Thomas Glanzmann
2009-04-29 14:31 ` Chris Mason
2009-04-29 15:26 ` Thomas Glanzmann
2009-04-29 15:45 ` Chris Mason
2009-06-04 8:49 ` Thomas Glanzmann
2009-06-04 11:43 ` Chris Mason
2009-06-04 12:03 ` Thomas Glanzmann
2009-06-04 12:43 ` Chris Mason
2009-06-05 12:20 ` Tomasz Chmielewski
2009-06-05 12:50 ` Chris Mason
2009-06-05 15:35 ` Tomasz Chmielewski
2009-04-29 0:06 ` Bron Gondwana
2009-05-06 15:16 ` Sander
2009-04-28 17:32 ` Thomas Glanzmann
2009-04-28 17:41 ` Michael Tharp
2009-04-28 20:14 ` Thomas Glanzmann
2009-05-04 14:29 ` Ric Wheeler
2009-05-04 14:39 ` Tomasz Chmielewski [this message]
2009-05-04 14:45 ` Ric Wheeler
2009-05-04 15:15 ` Thomas Glanzmann
2009-05-04 16:03 ` Ric Wheeler
2009-05-04 16:16 ` Andrey Kuzmin
2009-05-04 16:24 ` Thomas Glanzmann
2009-05-04 18:06 ` Jan-Frode Myklebust
2009-05-04 19:16 ` Andrey Kuzmin
2009-05-05 8:02 ` Thomas Glanzmann
2009-05-04 16:26 ` Thomas Glanzmann
2009-05-04 19:11 ` Heinz-Josef Claes
2009-05-04 21:29 ` Dmitri Nikulin
2009-05-05 7:18 ` Heinz-Josef Claes
2009-05-24 7:27 ` Thomas Glanzmann
2009-04-28 17:23 ` Chris Mason
2009-04-28 17:37 ` Thomas Glanzmann
2009-04-28 17:43 ` Chris Mason
2009-04-28 20:15 ` Thomas Glanzmann
2009-04-28 21:19 ` Dmitri Nikulin
2009-04-28 20:24 ` Thomas Glanzmann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=49FEFE27.5090804@wpkg.org \
--to=mangoo@wpkg.org \
--cc=chris.mason@oracle.com \
--cc=gxti@partiallystapled.com \
--cc=linux-btrfs@vger.kernel.org \
--cc=rwheeler@redhat.com \
--cc=thomas@glanzmann.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox