lubuntu 系统 cubietruck ssd 测试速度，大家有测试结果吗

yeyunxiaopan

lubuntu 系统 cubietruck ssd 测试速度
write
sudo dd oflag=direct if=/dev/zero of=aaa bs=1M count=1000
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 30.1714 s, 34.8 MB/s


read and write
sudo dd iflag=direct oflag=direct if=aaa of=bbb bs=1M count=1000
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 30.1714 s, 34.8 MB/s


read
sudo dd iflag=direct if=/dev/sda1 of=/dev/null bs=1M count=1000
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 6.64053 s, 158 MB/s

yeyunxiaopan

这是 PC的机械硬盘
write
sudo dd iflag=direct oflag=direct if=aaa of=bbb bs=1M count=1000
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 8.08554 s, 130 MB/s

read and write
sudo dd iflag=direct oflag=direct if=aaa of=bbb bs=1M count=1000
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 19.1264 s, 54.8 MB/s

ftts

这是用啥工具测的呢？？