# grep xfs /proc/mounts 
/dev/sdb /mnt/disk xfs rw,noatime,attr2,noquota 0 0

# bonnie++ -u root -r 0 -s 16384 -m xfs -x 1 -n 8:4194304:1024:8 -d /mnt/disk
Writing with putc()...Sat Dec 26 02:37:36 PST 2009
Writing intelligently...Sat Dec 26 02:43:37 PST 2009
Rewriting...Sat Dec 26 02:48:18 PST 2009
Reading with getc()...Sat Dec 26 02:58:34 PST 2009
Reading intelligently...Sat Dec 26 03:03:30 PST 2009
Create files in sequential order...Sat Dec 26 03:07:35 PST 2009		<--- lockdep warning
Stat files in sequential order...Sat Dec 26 03:13:11 PST 2009
Delete files in sequential order...Sat Dec 26 03:18:17 PST 2009
Create files in random order...Sat Dec 26 03:18:32 PST 2009
Stat files in random order...Sat Dec 26 03:24:03 PST 2009
Delete files in random order...Sat Dec 26 03:29:38 PST 2009
Script done on Sat Dec 26 12:36:21 2009