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Re: file systems



In <4DBD0D23.1080903@hardwarefreak.com>, Stan Hoeppner wrote:
>Independent Linux filesystem tests performed by an IBM engineer to track
>BTRFS performance during development.  XFS trounces the others in most
>tests:

These results are interesting and useful, but I think "trounces" is a poor 
description for what XFS does.

Not using barriers undermines data consistency guarantees, I think it is best 
to ignore the 2.6.35-rc5-autokern1-ext3-*-ext3, 2.6.35-rc5-autokern1-ext4-*-
ext4-nobarrier, and 2.6.35-rc5-autokern1-xfs-*-xfx-nobarrier entries.

So that btrfs doesn't remain the only filesystem with 2 entries, I'll also 
ignore the 2.6.35-rc5-autokern1-btrfs-*-btrfs-nocow entry, as it is non-
default.

>http://btrfs.boxacle.net/repository/raid/2.6.35-rc5/2.6.35-rc5/2.6.35-rc5_La
>rge_file_creates_num_threads=1.html

On the graphs, XFS is, respectively:
2nd, 4th, 2nd, 4th

>http://btrfs.boxacle.net/repository/raid/2.6.35-rc5/2.6.35-rc5/2.6.35-rc5_La
>rge_file_creates_num_threads=16.html

2nd, 1st, 2nd, 1st

>http://btrfs.boxacle.net/repository/raid/2.6.35-rc5/2.6.35-rc5/2.6.35-rc5_La
>rge_file_creates_num_threads=128.html

1st, 1st, 1st, 1st

>http://btrfs.boxacle.net/repository/raid/2.6.35-rc5/2.6.35-rc5/2.6.35-rc5_La
>rge_file_random_writes._num_threads=1.html

1st, 4th, 1st, 4th

>http://btrfs.boxacle.net/repository/raid/2.6.35-rc5/2.6.35-rc5/2.6.35-rc5_La
>rge_file_random_writes._num_threads=16.html

2nd, 1st, 2nd, 2nd

>http://btrfs.boxacle.net/repository/raid/2.6.35-rc5/2.6.35-rc5/2.6.35-rc5_La
>rge_file_random_writes._num_threads=128.html

2nd, 4th, 2nd, 2nd

>http://btrfs.boxacle.net/repository/raid/2.6.35-rc5/2.6.35-rc5/2.6.35-rc5_Ma
>il_server_simulation._num_threads=1.html

5th, 1st, 5th, 1st, 3rd

>http://btrfs.boxacle.net/repository/raid/2.6.35-rc5/2.6.35-rc5/2.6.35-rc5_Ma
>il_server_simulation._num_threads=16.html

5th, 1st, 5th, 5th, 1st

>http://btrfs.boxacle.net/repository/raid/2.6.35-rc5/2.6.35-rc5/2.6.35-rc5_Ma
>il_server_simulation._num_threads=128.html

4th, 2nd, 4th, 4th, 2nd

I wouldn't say that is a "trouncing", since it doesn't even win in many 
categories.
-- 
Boyd Stephen Smith Jr.                   ,= ,-_-. =.
bss@iguanasuicide.net                   ((_/)o o(\_))
ICQ: 514984 YM/AIM: DaTwinkDaddy         `-'(. .)`-'
http://iguanasuicide.net/                    \_/

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