Answers:
看此页面http://linuxpoison.blogspot.com.au/2009/02/how-to-measure-and-read-disk-activity.html
# cat /sys/block/sda/stat
11836508 1974427 276764974 242202738 13703385 18793696 597760590 2010426698 135 76333414 2253542452
领域3-读取的扇区数
领域7-写入的部门数量
iotop -a
(对于--accumulated
,-P
意味着其他)