I/O Graphs
previous next
I/O data can be presented in a graphical format. Here are two different graphs to help you visualize the activity of your system's disks. The first graph shows total I/O graphed over time and the second graph shows how busy the disks are. The disks can be sorted by percent busy or response time.

 

The average system-wide local I/O rate as measured by the r+w/s column in the sar -d data was 25.80 per second. This I/O rate peaked at 27 per second during multiple time intervals.

Graph of Total Disk I/O rate

The following graph shows the average percent busy and service time for up to 5 disks, sorted by percent busy.

Graph of up to 5 busiest disks