Raw unabashed I/O firepower

I hit Ctrl-C while testing …
the streaming write

root@jr4:~# dd if=/dev/zero of=/data/big.file bs=16M count=20k oflag=direct
^C15081+0 records in
15081+0 records out
253017194496 bytes (253 GB) copied, 186.973 s, 1.4 GB/s

and the streaming read

root@jr4:~# dd if=/data/big.file of=/dev/null bs=16M iflag=direct
10240+0 records in
10240+0 records out
171798691840 bytes (172 GB) copied, 99.0592 s, 1.7 GB/s

Quite nice.