iostat

http://m.blog.csdn.net/article/details?id=43196731

http://blog.csdn.net/haiross/article/details/43196731

https://yq.aliyun.com/articles/53584

https://m.aliyun.com/yunqi/articles/53584

http://www.cnblogs.com/ToDoToTry/p/4451281.html

http://m.blog.csdn.net/article/details?id=39478959