Re: Numbers: ext2/ext3/reiser Performance (ext3 is slow)

arjan
2001-11-10T14:49:26Z

In article <Pine.LNX.4.40.0111101516050.14500-100000@omega.hbh.net> you wrote:

> Hello !

> Anyone has an idea, why this ext3 "fails" at this specific test while on
> normal fs-benchmarks it is much better ?

ext3 by default imposes stricter ordering than the other journalling
filesystems in order to improve _data_ consistency (as opposed to just
the guarantee of consistent metadata as most other filesystems do).
if you mount the filesystem with

mount -t ext3 -o data=writeback /dev/foo /mnt/bar

will make it use the same level of guarantee as reiserfs does.

mount -t ext3 -o data=journal /dev/foo /mnt/bar

will do FULL data journalling and will also guarantee data integrety after a
crash...

Greetings,
Arjan van de Ven