[prev in list] [next in list] [prev in thread] [next in thread] 

List:       opensuse-factory
Subject:    Re: [opensuse-factory] Fwd: observed significant performance	improvement
From:       Jeff Mahoney <jeffm () suse ! com>
Date:       2010-08-16 14:58:56
Message-ID: 4C695230.6090103 () suse ! com
[Download RAW message or body]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 08/16/2010 04:02 AM, Jean-Daniel Dodin wrote:
> Le 16/08/2010 03:46, Jeff Mahoney a écrit :
> 
>>> I see ext4 very deprecated in your blog. So why was it choosen as
>>> default for openSUSE (against ext3)?
>>
>> The short answer is release schedules.
> 
> thanks. So we can expect to have btrfs default for openSUSE 11.4

Probably not. OpenSUSE 11.4 is tentatively scheduled to come out in
March, which is only 7 months away. I use btrfs for my data partition
and users who can tolerate a bit of uncertainty are welcome to test it.
I wouldn't yet recommend it as the default yet since there are at least
two major issues left to resolve. The first is that the balancing
algorithm needs to be fixed to avoid a situation where unfilled tree
entries populate the metadata tree. That ends up causing the file system
to be more than 50% populated by metadata - so your 20 GB file system
only has 10 GB usable for data. Not a good scene.

The second is that most error conditions are still "handled" by
crashing. This is how reiserfs was for a long time and I'd prefer not to
relive that experience.

- -Jeff

- -- 
Jeff Mahoney
SUSE Labs
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.15 (GNU/Linux)
Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org/

iEYEARECAAYFAkxpUjAACgkQLPWxlyuTD7IOewCfeJlmWb+Hy+onv3nZc11qtLiQ
XSgAoI9la0TJVxRMzsXifsyS2ng7pMGP
=7nQ4
-----END PGP SIGNATURE-----
-- 
To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org
For additional commands, e-mail: opensuse-factory+help@opensuse.org

[prev in list] [next in list] [prev in thread] [next in thread]