[Fwd: JFFS2 compresses?]

[Fwd: JFFS2 compresses?]

[Jose Rodríguez Argente]

[-- Attachment #1: Type: text/plain, Size: 1 bytes --]



[-- Attachment #2: JFFS2 compresses? --]
[-- Type: message/rfc822, Size: 1070 bytes --]

From: "Jose Rodríguez Argente" <jradc@tid.es>
To: linux-mtd@lists.infradead.org
Subject: JFFS2 compresses?
Date: Wed, 19 Sep 2001 14:44:41 +0200
Message-ID: <3BA89339.50407@tid.es>

Does JFFS2 compress data in flash?

When I check the available space in Flash

df

Filesystem                    1k-blocks        Used    Available    Use% 
   Mounted on
/dev/mtdblock1            32000                5772    26228            
18%        /

But when I erase a file that is 702k big I get:

df

Filesystem                    1k-blocks        Used    Available    Use% 
   Mounted on
/dev/mtdblock1            32000                5648    26352            
18%        /

Which means that 124k have been freed.
I think there is a compression algorythm involved...?

Thanks a lot

Re: [Fwd: JFFS2 compresses?]

[Kenneth Johansson]

Jose Rodríguez Argente wrote:
> Does JFFS2 compress data in flash?
.
.
.
> I think there is a compression algorythm involved...?
                                 ^^^^^^^^^
Yes it dose compression it's groovy, jazzy and funky :)

-- 
Kenneth Johansson	
Ericsson Business Innovation AB   Tel: +46 8 404 71 83
Viderögatan 3                     Fax: +46 8 404 72 72
164 80 Stockholm                  kenneth.johansson@inn.ericsson.se