sync;/usr/bin/time -p bash -c "(dd if=/dev/zero of=test.dd bs=1000K count=20000;sync)"
20000+0 records in
20000+0 records out
20480000000 bytes (20 GB) copied, 183.266 seconds, 112 MB/s
real 183.46
user 0.03
sys 13.02
sync;/usr/bin/time -p bash -c "(dd if=/dev/zero of=test.dd bs=1000K count=20000;sync)"
20000+0 records in
20000+0 records out
20480000000 bytes (20 GB) copied, 183.266 seconds, 112 MB/s
real 183.46
user 0.03
sys 13.02