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From: lkml777@123mail.org
To: lkml777@123mail.org, "Edward Shishkin" <edward@namesys.com>,
       "Andrew Morton" <akpm@linux-foundation.org>,
       "Vladimir V. Saveliev" <vs@namesys.com>,
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Subject: Re: Question about Reiser4
In-Reply-To: <1177459922.31000.1186391425@webmail.messagingengine.com>
Date: Thu, 26 Apr 2007 00:54:20 -0700
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On Wed, 25 Apr 2007 19:03:12 +0400, "Edward Shishkin"
<edward@namesys.com> said:
> lkml777@123mail.org wrote:
> 
> >
> >As I understand it, the default Reiser4 DOES NOT USE any compression at
> >all, not even tail compression,
> >
> 
> ^tail compression^tail conversion
> Reiser4 does use tail conversion by default.
> 
> > but saves space by eliminating block
> >alignment wastage (tail compression is an option).
> >
> >So lets LOSE the statistics that involve compression. The results now
> >look like this:
> >
> >.-------------------------.
> >| FILESYSTEM | TIME |DISK |
> >| TYPE       |(secs)|USAGE|
> >.-------------------------.
> >|REISER4     | 3462 | 692 |
> >|EXT2        | 4092 | 816 |
> >|JFS         | 4225 | 806 |
> >|EXT4        | 4408 | 816 |
> >|EXT3        | 4421 | 816 |
> >|XFS         | 4625 | 779 |
> >|REISER3     | 6178 | 793 |
> >|FAT32       |12342 | 988 |
> >|NTFS-3g     |10414 | 772 |
> >.-------------------------.
> >
> >These results are still EXTREMELY GOOD for REISER4.
> >  
> >
> 
> Everything is not so simple in the science of testing..
> Would you please change direction of your activity to stressing
> instead of benchmarking? Caught oopses would have great value..
> OK?
> 
> Regards,
> Edward.
> 

Tail conversion is NOT compression,....

So what exactly is your point?

By "tail compression" I mean plugin ctail40, but since I was never able
to get it to work, maybe its not tail compression at all.
-- 
  
  lkml777@123mail.org

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