linux-ext4 - Re: Porting Zfs features to ext2/3

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Date:	Mon, 4 Aug 2008 23:38:13 +0300 (EEST)
From:	Szabolcs Szakacsits <szaka@...s-3g.org>
To:	Theodore Tso <tytso@....EDU>
cc:	linux-ext4@...r.kernel.org
Subject: Re: Porting Zfs features to ext2/3


On Thu, 31 Jul 2008, Szabolcs Szakacsits wrote:
> On Tue, 29 Jul 2008, Theodore Tso wrote:
>
> > What happens if you try benchmarking unpacking a kernel source tar.bz2 
> > file?  My guess is that ntfs-3g won't look as good.  :-)
> 
> It seems the tar.bz2 number is not so bad relatively but the metadata 
> performance difference is much more visible by eliminating the compression 
> overhead. The results are in second.
> 
>               ext3    ntfs-3g
>   tar.bz2      7.7      12.4
>   tar.gz       3.1       8.7
>   tar          1.4       7.6

Sorry, I didn't use the currently best performing ntfs-3g version. 
Corrected results:

               ext3    ntfs-3g
               ----    -------
   tar.bz2      7.7      9.9
   tar.gz       3.1      6.0
   tar          1.4      4.9

Compilation of e2fsprogs:

                 ext3     ntfs-3g
                 ----     -------
   unpack        0.27       0.47
   configure     8.42       9.73
   make         21.35      23.33
   make -j      13.21      14.09
   make clean    0.20       0.24

Please not that ntfs-3g and fuse is not yet optimized for metadata 
operations.

	Szaka

--
NTFS-3G:  http://ntfs-3g.org

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