As its name indicates, IOTop is a Top-like utility but for disk IO. It shows a constantly updating list of processes, sorted by the amount of disk IO (read or write) they are performing. I find it extremely useful to find out quickly which process is causing the disk to grind noisily 🙂

  • Installing is easy:
$ sudo apt install iotop
  • To view all the processes, sorted by disk IO:
$ sudo iotop
  • To view only the processes that are actually doing any disk reads or writes:
$ sudo iotop -o

Tried with: IOTop 0.6 and Ubuntu 14.04

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