EXT4 v.s. NTFS speed

Official Hardware Classic Yún
1

EXT4:

root@Arduino:~#  /usr/bin/dd if=/dev/zero of=/mnt/sda1/largefile bs=8k count=10000
10000+0 records in
10000+0 records out
81920000 bytes (82 MB) copied, 7.52618 s, 10.9 MB/s

root@Arduino:~#  /usr/bin/dd if=/mnt/sda1/largefile of=/dev/null bs=8k
10000+0 records in
10000+0 records out
81920000 bytes (82 MB) copied, 5.84042 s, 14.0 MB/s

NTFS:

root@Arduino:~# /usr/bin/dd if=/dev/zero of=/mnt/sda1/largefile bs=8k count=10000
10000+0 records in
10000+0 records out
81920000 bytes (82 MB) copied, 36.6383 s, 2.2 MB/s

root@Arduino:~# /usr/bin/dd if=/mnt/sda1/largefile of=/dev/null bs=8k
10000+0 records in
10000+0 records out
81920000 bytes (82 MB) copied, 8.42019 s, 9.7 MB/s

Writing speed of EXT4 beat NTFS's by 495% at Yun & compitable.