测量读/写磁盘利用率

Question

I want to measure the read disk utilisation and write disk utilisation.
I used iostat and sar but they give Total utilisation (in field %util) which includes read and write.

Resutls using iostat and sar in my computer

But I want to know how to calculate the percentage/utilisation of only read or write separately.

Answer 1

There is a tool called atop that shows separate read and write numbers.

You can get its source code and modify to produce the numbers you want.