Here's result of running akpm's synctest available at
I tried to run synctest in a way which modelled Postfix's
<http://www.postfix.org/> queue writing behaviour.
I ran it against ext3 (htree,ordered) and xfs. I used xfsprogs-2.6.9 to
mkfs the xfs filesystem. I found that with the parameters I ran, xfs was
very slow compared to ext3
Hardware, P3-450 with 384MB RAM, filesystems on a 9GB SCSI disk
Anticipatory IO scheduler with global_tag_depth of 4
Tests performed after machine was cleanly booted.
Multiple tests done, box rebooted between tests.
numbers are more or less the same
kernel version: 2.6.5-rc3-mm4
/usr/bin/time -p ./synctest -fu -t 100 -p1 -n1 /path/to/appropiate-dir
htree,ordered : real 60.16 user 1.64 sys 17.81
xfs : real 880.71 user 2.93 sys 48.09