From: "Markus F.X.J. Oberhumer" <markus@oberhumer.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: chris.mason@oracle.com, linux-kernel@vger.kernel.org,
linux-btrfs@vger.kernel.org,
Nitin Gupta <nitingupta910@gmail.com>,
Richard Purdie <rpurdie@openedhand.com>
Subject: Re: Updated btrfs/crypto snappy interface ready for merging
Date: Wed, 18 Jan 2012 16:05:20 +0100 [thread overview]
Message-ID: <4F16DFB0.2060404@oberhumer.com> (raw)
In-Reply-To: <1326414530-10789-1-git-send-email-andi@firstfloor.org>
On 2012-01-13 01:28, Andi Kleen wrote:
> Here's a slightly updated version of the BTRFS snappy interface.
> snappy is a faster compression algorithm that provides similar
> compression as LZO, but generally better performance.
I'd like to note that the LZO version in the current Linux kernel is
rather outdated - it seems to be based on the 2005 release.
In fact the latest version LZO 2.06 does compress both slightly faster and
better than snappy 1.0.4 when benchmarking the Calgary and Silesia
compression corpus (tested with gcc 4.6 on Nehalem & Sandy Bridge).
Furthermore please be aware that from a pure compression point of view
snappy et al. are very close cousins of LZO (strictly byte-aligned LZ77)
that mainly differ in implementation issues like using a table to
number of branches - and indeed similar optimizations could be applied
to any version.
I'm not sure if there is an official kernel maintainer of LZO, but I'd
offer to assist you updating to the latest version and eliminating
any possible performance issues.
Cheers,
Markus
--
Markus Oberhumer, <markus@oberhumer.com>, http://www.oberhumer.com/
next prev parent reply other threads:[~2012-01-18 15:05 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-13 0:28 Updated btrfs/crypto snappy interface ready for merging Andi Kleen
2012-01-13 0:28 ` [PATCH 1/3] Add the snappy-c compressor to lib v2 Andi Kleen
2012-02-14 4:29 ` Mitch Harder
2012-02-14 19:52 ` Andi Kleen
2012-02-15 0:43 ` Mitch Harder
2012-01-13 0:28 ` [PATCH 2/3] BTRFS: Add snappy support v2 Andi Kleen
2012-01-13 0:28 ` [PATCH 3/3] Add snappy interface to crypto API Andi Kleen
2012-01-13 2:40 ` Updated btrfs/crypto snappy interface ready for merging Jaromir Zdrazil
2012-01-16 13:54 ` Chris Mason
2012-01-17 8:44 ` Li Zefan
2012-01-17 8:46 ` Andi Kleen
2012-01-17 8:56 ` Li Zefan
2012-01-17 9:27 ` Li Zefan
2012-01-17 9:51 ` Andi Kleen
2012-01-17 9:07 ` David Sterba
2012-01-18 15:02 ` evergreen
2012-01-24 17:03 ` Hugo Chevrain
2012-01-25 11:30 ` David Sterba
2012-01-18 15:05 ` Markus F.X.J. Oberhumer [this message]
2012-01-23 16:19 ` ANN: linux-kernel-lzo-2.06.20120123 - update LZO to v2.06 Markus F.X.J. Oberhumer
2012-01-23 19:12 ` Nitin Gupta
2012-01-25 1:36 ` Andi Kleen
2012-10-09 8:39 ` David Sterba
2012-07-16 18:30 ` ANNOUNCE: linux-kernel-lzo-20120716 - update LZO Markus F.X.J. Oberhumer
2012-07-19 20:58 ` richard -rw- weinberger
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=4F16DFB0.2060404@oberhumer.com \
--to=markus@oberhumer.com \
--cc=andi@firstfloor.org \
--cc=chris.mason@oracle.com \
--cc=linux-btrfs@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=nitingupta910@gmail.com \
--cc=rpurdie@openedhand.com \
/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;
as well as URLs for NNTP newsgroup(s).