It would be informative to know in real-time the swap activity (number of reads and writes per minute or similar measure). I intend to use it with conky
.
I can gather similar statistics by vmstat
or agregate output of iotop
. Unfortunately I cannot learn about the activity specifically on each swap device. The swapon
command doesn't provide such answer and neither do /proc/swaps
.
(I use zram swap, so the moment when swapping occurs is not immediately obvious. And since zram swap makes penalty for cpu I would like to know if it happens when I start long computations. )