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$ iostat 3
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$ iostat 3
disk0 cpu load average
KB/t tps MB/s us sy id 1m 5m 15m
65.89 6 0.38 1 1 97 1.35 1.21 1.12
12.85 29 0.36 1 1 98 1.33 1.20 1.12
16.00 1 0.01 1 1 98 1.33 1.20 1.12
sudo apt-get install sysstat
$ dd if=/dev/zero of=/tmp/test.tmp bs=500K count=1024
$ dd if=/tmp/test.tmp of=/dev/null bs=500K count=1024
$ rm /tmp/test.tmp
root@comp:~# dd if=/dev/zero of=/mnt/3TB/test.tmp bs=5000K count=1024
5242880000 byte (5,2 GB), 154,418 s, 34,0 MB/s
5242880000 byte (5,2 GB), 148,747 s, 35,2 MB/s (ext3, write)
5242880000 byte (5,2 GB), 126,012 s, 41,6 MB/s (ext3, read)
root@comp:~# dd if=/dev/zero of=/mnt/4TB/test.tmp bs=5000K count=1024
5242880000 byte (5,2 GB), 151,988 s, 34,5 MB/s
5242880000 byte (5,2 GB), 144,414 s, 36,3 MB/s (ext4, write)
5242880000 byte (5,2 GB), 113,318 s, 46,3 MB/s (ext4, read)
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