Final test: Inside the system: resources, kernel, processes

Read the output

What does the last column say?

$ iostat -dx 1 2 | tail -2
Device  ...  w/s     wkB/s  ...  w_await  ...  aqu-sz  %util
vda     ...  343.00  3656.00  ...  2.86  ...  1.86  94.10

• A 94% of the disk space is used.
• B The disk is busy with requests almost all the time.
• C The disk delivers 94% of its top speed.