From: Hans Reiser <reiser@namesys.com>
To: Edward Shishkin <edward@namesys.com>
Cc: PFC <lists@peufeu.com>, ReiserFS List <reiserfs-list@namesys.com>
Subject: Re: Reiser4 und LZO compression
Date: Wed, 30 Aug 2006 09:55:47 -0700 [thread overview]
Message-ID: <44F5C313.40905@namesys.com> (raw)
In-Reply-To: <44F5C1D7.5060904@namesys.com>
Edward Shishkin wrote:
>
> (Plain) file is considered as a set of logical clusters (64K by
> default). Minimal unit occupied in memory by (plain) file is one
> page. Compressed logical cluster is stored on disk in so-called
> "disk clusters". Disk cluster is a set of special items (aka "ctails",
> or "compressed bodies"), so that one block can contain (compressed)
> data of many files and everything is packed tightly on disk.
>
>
>
So the compression unit is 64k for purposes of your benchmarks.
next prev parent reply other threads:[~2006-08-30 16:55 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-27 0:34 Reiser4 und LZO compression Alexey Dobriyan
2006-08-27 8:04 ` Andrew Morton
2006-08-27 8:49 ` Ray Lee
2006-08-27 9:42 ` David Masover
2006-08-28 17:34 ` Jindrich Makovicka
2006-08-28 18:05 ` Edward Shishkin
2006-08-28 12:42 ` Jörn Engel
2006-08-29 13:14 ` PFC
2006-08-29 17:38 ` David Masover
2006-08-28 17:06 ` Hans Reiser
2006-08-28 17:37 ` Stefan Traby
2006-08-28 18:15 ` Edward Shishkin
2006-08-28 21:48 ` Nigel Cunningham
2006-08-28 23:32 ` Hans Reiser
2006-08-29 4:05 ` Jan Engelhardt
2006-08-29 5:41 ` Nigel Cunningham
2006-08-29 8:23 ` David Masover
2006-08-29 9:57 ` Nigel Cunningham
2006-08-29 11:09 ` Ray Lee
2006-08-29 11:38 ` Edward Shishkin
2006-08-29 22:03 ` Nigel Cunningham
2006-08-29 4:59 ` Paul Mundt
2006-08-29 5:47 ` Nigel Cunningham
2006-08-29 13:45 ` PFC
2006-08-29 14:38 ` Stefan Traby
2006-08-29 15:55 ` PFC
2006-08-29 17:56 ` Hans Reiser
2006-08-29 18:31 ` David Masover
2006-08-29 18:36 ` Gregory Maxwell
2006-08-29 19:11 ` David Masover
2006-08-29 19:38 ` Hans Reiser
2006-08-29 20:03 ` David Masover
2006-08-29 22:15 ` Toby Thain
2006-08-29 22:42 ` David Masover
2006-08-30 9:17 ` PFC
2006-08-30 10:45 ` David Masover
2006-08-30 16:50 ` Edward Shishkin
2006-08-30 16:55 ` Hans Reiser [this message]
2006-08-31 9:32 ` Clemens Eisserer
2006-08-31 12:00 ` Edward Shishkin
2006-08-31 15:14 ` Clemens Eisserer
2006-08-31 16:55 ` Hans Reiser
2006-08-31 18:08 ` Edward Shishkin
2006-08-31 19:22 ` David Masover
2006-08-29 15:41 ` Gregory Maxwell
2006-08-29 17:42 ` Hans Reiser
2006-08-29 9:29 ` Edward Shishkin
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