Usage: /usr/bin/iotop [OPTIONS]

DISK READ and DISK WRITE are the block I/O bandwidth used during the sampling
period. SWAPIN and IO are the percentages of time the thread spent respectively
while swapping in and waiting on I/O more generally. PRIO is the I/O priority
at which the thread is running (set using the ionice command).

Controls: left and right arrows to change the sorting column, r to invert the
sorting order, o to toggle the --only option, p to toggle the --processes
option, a to toggle the --accumulated option, i to change I/O priority, h to
show all the keys, q to quit.

Options:
  -v, --version          show program's version number and exit
  -h, --help             show this help message and exit
  -H, --help-type=TYPE   set type of interactive help (none, win or inline)
  -o, --only             only show processes or threads actually doing I/O
      --no-only          show all processes or threads
  -b, --batch            non-interactive mode
  -n NUM, --iter=NUM     number of iterations before ending [infinite]
  -d SEC, --delay=SEC    delay between iterations [1 second]
  -p PID, --pid=PID      processes/threads to monitor [all]
  -u USER, --user=USER   users to monitor [all]
  -P, --processes        only show processes, not all threads
      --threads          show all threads
      --flat             list the threads alone, not grouped below their process
      --no-flat          list the threads grouped below their process
  -a, --accumulated      show accumulated I/O instead of bandwidth
      --no-accumulated   show bandwidth
  -A, --accum-bw         show accumulated bandwidth
      --no-accum-bw      show last iteration bandwidth
      --lifetime         accumulate I/O since each task started [default]
      --no-lifetime      accumulate I/O since iotop first saw each task
  -k, --kilobytes        use kilobytes instead of a human friendly unit
      --no-kilobytes     use human friendly unit
  -t, --time             add a timestamp on each line (implies --batch)
      --timestamp        same as --time
  -c, --fullcmdline      show full command line
      --no-fullcmdline   show program names only
  -1, --hide-pid         hide PID/TID column
      --show-pid         show PID/TID column
  -2, --hide-prio        hide PRIO column
      --show-prio        show PRIO column
  -3, --hide-user        hide USER column
      --show-user        show USER column
  -4, --hide-read        hide DISK READ column
      --show-read        show DISK READ column
      --show-vfs-read    show VFS READ column
      --hide-vfs-read    hide VFS READ column
  -5, --hide-write       hide DISK WRITE column
      --show-write       show DISK WRITE column
      --show-vfs-write   show VFS WRITE column
      --hide-vfs-write   hide VFS WRITE column
      --show-vfs         show VFS READ and VFS WRITE columns
      --hide-vfs         hide VFS READ and VFS WRITE columns
  -6, --hide-swapin      hide SWAPIN column
      --show-swapin      show SWAPIN column
  -7, --hide-io          hide IO column
      --show-io          show IO column
  -8, --hide-graph       hide GRAPH column
      --show-graph       show GRAPH column
  -9, --hide-command     hide COMMAND column
      --show-command     show COMMAND column
  -g TYPE, --grtype=TYPE set graph data source (io, r, w, rw and sw)
  -R, --reverse-graph    reverse GRAPH column direction
      --no-reverse-graph do not reverse GRAPH column direction
  -q, --quiet            print column names only on the first run (implies --batch)
                         a second -q will also suppress the first run column names
                         a third -q will suppress the I/O summary
  -x, --dead-x           show exited processes/threads with letter x
      --no-dead-x        show exited processes/threads with background
  -e, --hide-exited      hide exited processes
      --show-exited      show exited processes
  -l, --no-color         do not colorize values
      --color            colorize values
  -T, --hide-time        hide current time
      --show-time        show current time
      --si               use SI units of 1000 when printing values
      --no-si            use non-SI units of 1024 when printing values
      --threshold=1..10  threshold to switch to next unit
      --ascii            disable using Unicode
      --unicode          use Unicode drawing chars
  -N, --inverse          use inverse interface (black on white)
      --no-inverse       use normal interface
      --filter=REGEX     filter processes by TID and COMMAND
      --uid2name=MODE    set UID to user name resolution mode (always, none, cyclic, [static])
  -W, --write            write preceding options to the config and exit
      --debug-write      write preceding options to stdout like -W and exit (for debugging/testing)