Tunning on XFS

options su and sw

mkfs.xfs -f -d su=128k,sw=28 /dev/sdb

WRITE
real    0m27.698s
user    0m0.017s
sys     0m17.726s

READ
real    0m14.142s
user    0m0.003s
sys     0m9.003s

mkfs.xfs -f -d su=128k,sw=14 /dev/sdb
WRITE
real    0m27.800s
user    0m0.023s
sys     0m17.689s

READ
real    0m14.371s
user    0m0.010s
sys     0m8.733s

mkfs.xfs -f -d su=64k,sw=28 /dev/sdb
WRITE
real    0m27.767s
user    0m0.010s
sys     0m18.299s

READ
real    0m14.449s
user    0m0.007s
sys     0m9.059s

mkfs.xfs -f -d su=64k,sw=14 /dev/sdb
WRITE
real    0m27.809s
user    0m0.017s
sys     0m17.666s

READ
real    0m14.492s
user    0m0.007s
sys     0m8.623s

mkfs.xfs -f -d su=32k,sw=28 /dev/sdb
WRITE
real    0m27.490s
user    0m0.013s
sys     0m17.706s

READ
real    0m14.430s
user    0m0.003s
sys     0m8.983s

mkfs.xfs -f -d su=32k,sw=14 /dev/sdb
WRITE
real    0m27.867s
user    0m0.007s
sys     0m17.596s

READ
real    0m14.330s
user    0m0.013s
sys     0m8.953s

different size of INODE

mkfs.xfs -f -i size=256 /dev/sdb
mkfs.xfs -f /dev/sdc

real    0m27.960s
user    0m0.020s
sys     0m17.509s

real    0m14.531s
user    0m0.007s
sys     0m9.203s
mkfs.xfs -f -i size=512 /dev/sdb

real    0m28.027s
user    0m0.007s
sys     0m17.939s

real    0m14.917s
user    0m0.007s
sys     0m9.259s
mkfs.xfs -f -i size=1024 /dev/sdb

real    0m28.264s
user    0m0.023s
sys     0m18.182s

real    0m14.490s
user    0m0.017s
sys     0m9.286s
mkfs.xfs -f -i size=2048 /dev/sdb

real    0m28.244s
user    0m0.017s
sys     0m17.799s

real    0m14.508s
user    0m0.010s
sys     0m9.383s
mkfs.xfs -f -i size=3072 /dev/sdb

real    0m27.564s
user    0m0.017s
sys     0m17.346s

real    0m14.523s
user    0m0.003s
sys     0m9.276s
mkfs.xfs -f -i size=4096 /dev/sdb

real    0m27.969s
user    0m0.013s
sys     0m17.856s

real    0m15.061s
user    0m0.003s
sys     0m8.676s