On my Raspbian 8 (Jessie) system
iostat -dzp 5 |grep -v "k0 "
: Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn mmcblk0p2 0.80 0.00 3.20 0 16 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn :
sudo iotop -btoqqqd 5
does not show anything at the same time. Why?
It seems like this problem has been seen before: iotop does not show writes.
I have reported this as bug to Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=856186.