(see [here](http://man7.org/linux/man-pages/man5/proc.5.html))
Taking iotop as a reference (see https://unix.stackexchange.com/questions/248197/iotop-showing-1-5-mb-s-of-disk-write-but-all-programs-have-0-00-b-s/248218#248218):
Taking iotop as a reference (see [here](https://unix.stackexchange.com/questions/248197/iotop-showing-1-5-mb-s-of-disk-write-but-all-programs-have-0-00-b-s/248218#248218)):
iotop read information per process from `/proc/<pid>/io`, in particular:
...
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@@ -43,11 +43,10 @@ pgpgout – Number of kilobytes the system has paged out to disk per second.
Combining per process info with global info iotop calculate the % of write/read
throughput each process is consuming.
Referenced iotop is a python rewrite of original iotop
(https://github.com/analogue/iotop).
Referenced iotop is a python rewrite of original [iotop](https://github.com/analogue/iotop).
Original iotop code(https://github.com/Tomas-M/iotop) uses Taskstats