Re: Question about Reiser4

From: lkml777
Date: Wed Apr 25 2007 - 20:44:39 EST



On Wed, 25 Apr 2007 19:03:12 +0400, "Edward Shishkin"
<edward@xxxxxxxxxxx> said:
> lkml777@xxxxxxxxxxx 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@xxxxxxxxxxx

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